diff --git a/App.config b/App.config
index 0927f88..b00767f 100644
--- a/App.config
+++ b/App.config
@@ -11,19 +11,19 @@
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Memory" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.0.2.0" newVersion="4.0.2.0" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.5.0" newVersion="4.0.5.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Runtime.CompilerServices.Unsafe" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-6.0.1.0" newVersion="6.0.1.0" />
+        <bindingRedirect oldVersion="0.0.0.0-6.0.3.0" newVersion="6.0.3.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Buffers" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.0.4.0" newVersion="4.0.4.0" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.5.0" newVersion="4.0.5.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-8.0.0.0" newVersion="8.0.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-10.0.0.5" newVersion="10.0.0.5" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Numerics.Vectors" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
@@ -31,15 +31,27 @@
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Security.Cryptography.Pkcs" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-8.0.0.1" newVersion="8.0.0.1" />
+        <bindingRedirect oldVersion="0.0.0.0-10.0.0.5" newVersion="10.0.0.5" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.IO.Packaging" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-8.0.0.1" newVersion="8.0.0.1" />
+        <bindingRedirect oldVersion="0.0.0.0-10.0.0.5" newVersion="10.0.0.5" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Text.Json" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-8.0.0.6" newVersion="8.0.0.6" />
+        <bindingRedirect oldVersion="0.0.0.0-10.0.0.5" newVersion="10.0.0.5" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Threading.Tasks.Extensions" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.2.4.0" newVersion="4.2.4.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Threading.Channels" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-10.0.0.5" newVersion="10.0.0.5" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Text.Encodings.Web" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-10.0.0.5" newVersion="10.0.0.5" />
       </dependentAssembly>
     </assemblyBinding>
   </runtime>
diff --git a/DocumentViewer.Designer.vb b/DocumentViewer.Designer.vb
index b93f23c..211af3c 100644
--- a/DocumentViewer.Designer.vb
+++ b/DocumentViewer.Designer.vb
@@ -381,7 +381,7 @@ Partial Class DocumentViewer
         Me.MyGDPViewer.HQAnnotationRendering = True
         Me.MyGDPViewer.IgnoreDocumentResolution = False
         Me.MyGDPViewer.KeepDocumentPosition = False
-        Me.MyGDPViewer.Location = New System.Drawing.Point(185, 138)
+        Me.MyGDPViewer.Location = New System.Drawing.Point(192, 138)
         Me.MyGDPViewer.LockViewer = False
         Me.MyGDPViewer.MagnifierHeight = 90
         Me.MyGDPViewer.MagnifierWidth = 160
@@ -446,7 +446,7 @@ Partial Class DocumentViewer
         Me.lbFileNotLoaded.Appearance.TextOptions.VAlignment = DevExpress.Utils.VertAlignment.Center
         Me.lbFileNotLoaded.AutoEllipsis = True
         Me.lbFileNotLoaded.AutoSizeMode = DevExpress.XtraEditors.LabelAutoSizeMode.None
-        Me.lbFileNotLoaded.Location = New System.Drawing.Point(3, 74)
+        Me.lbFileNotLoaded.Location = New System.Drawing.Point(6, 78)
         Me.lbFileNotLoaded.Name = "lbFileNotLoaded"
         Me.lbFileNotLoaded.Size = New System.Drawing.Size(628, 72)
         Me.lbFileNotLoaded.TabIndex = 0
diff --git a/DocumentViewer.resx b/DocumentViewer.resx
index 6f34371..63fd272 100644
--- a/DocumentViewer.resx
+++ b/DocumentViewer.resx
@@ -123,6 +123,9 @@
   <metadata name="BarManager1.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
     <value>285, 22</value>
   </metadata>
+  <metadata name="$this.TrayHeight" type="System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
+    <value>147</value>
+  </metadata>
   <assembly alias="DevExpress.Data.v21.2" name="DevExpress.Data.v21.2, Version=21.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" />
   <data name="buttonPrint.ImageOptions.SvgImage" type="DevExpress.Utils.Svg.SvgImage, DevExpress.Data.v21.2" mimetype="application/x-microsoft.net.object.bytearray.base64">
     <value>
@@ -161,26 +164,6 @@
         NC42LTAuOCw2LjUtMi4xbDcuOSw3LjljMC4zLDAuMywwLjksMC4zLDEuMiwwbDEuMi0xLjJDMzAuMSwy
         OC4yLDMwLjEsMjcuNiwyOS43LDI3LjN6IE00LDEzYzAtNSw0LTksOS05YzUsMCw5LDQsOSw5ICAgcy00
         LDktOSw5QzgsMjIsNCwxOCw0LDEzeiIgY2xhc3M9IkJsYWNrIiAvPg0KICA8L2c+DQo8L3N2Zz4L
-</value>
-  </data>
-  <data name="btnSearch2.ImageOptions.SvgImage" type="DevExpress.Utils.Svg.SvgImage, DevExpress.Data.v21.2" mimetype="application/x-microsoft.net.object.bytearray.base64">
-    <value>
-        AAEAAAD/////AQAAAAAAAAAMAgAAAFlEZXZFeHByZXNzLkRhdGEudjIxLjIsIFZlcnNpb249MjEuMi40
-        LjAsIEN1bHR1cmU9bmV1dHJhbCwgUHVibGljS2V5VG9rZW49Yjg4ZDE3NTRkNzAwZTQ5YQUBAAAAHURl
-        dkV4cHJlc3MuVXRpbHMuU3ZnLlN2Z0ltYWdlAQAAAAREYXRhBwICAAAACQMAAAAPAwAAANoCAAAC77u/
-        PD94bWwgdmVyc2lvbj0nMS4wJyBlbmNvZGluZz0nVVRGLTgnPz4NCjxzdmcgeD0iMHB4IiB5PSIwcHgi
-        IHZpZXdCb3g9IjAgMCAzMiAzMiIgdmVyc2lvbj0iMS4xIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcv
-        MjAwMC9zdmciIHhtbG5zOnhsaW5rPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5L3hsaW5rIiB4bWw6c3Bh
-        Y2U9InByZXNlcnZlIiBpZD0iTGF5ZXJfMSIgc3R5bGU9ImVuYWJsZS1iYWNrZ3JvdW5kOm5ldyAwIDAg
-        MzIgMzIiPg0KICA8c3R5bGUgdHlwZT0idGV4dC9jc3MiPgoJLkJsdWV7ZmlsbDojMTE3N0Q3O30KCS5Z
-        ZWxsb3d7ZmlsbDojRkZCMTE1O30KCS5CbGFja3tmaWxsOiM3MjcyNzI7fQoJLkdyZWVue2ZpbGw6IzAz
-        OUMyMzt9CgkuUmVke2ZpbGw6I0QxMUMxQzt9Cgkuc3Qwe29wYWNpdHk6MC43NTt9Cgkuc3Qxe29wYWNp
-        dHk6MC41O30KPC9zdHlsZT4NCiAgPGcgaWQ9Ilpvb20iPg0KICAgIDxwYXRoIGQ9Ik0yNy43LDI1LjNM
-        MjAuNSwxOGMxLTEuNCwxLjUtMy4yLDEuNS01YzAtNS00LTktOS05cy05LDQtOSw5YzAsNSw0LDksOSw5
-        YzEuOSwwLDMuNi0wLjYsNS0xLjVsNy4zLDcuMyAgIGMwLjMsMC4zLDAuOSwwLjMsMS4yLDBsMS4yLTEu
-        MkMyOC4xLDI2LjIsMjguMSwyNS42LDI3LjcsMjUuM3ogTTYsMTNjMC0zLjksMy4xLTcsNy03czcsMy4x
-        LDcsN2MwLDMuOS0zLjEsNy03LDdTNiwxNi45LDYsMTN6IiBjbGFzcz0iQmxhY2siIC8+DQogIDwvZz4N
-        Cjwvc3ZnPgs=
 </value>
   </data>
   <data name="btnPrevHighlight.ImageOptions.SvgImage" type="DevExpress.Utils.Svg.SvgImage, DevExpress.Data.v21.2" mimetype="application/x-microsoft.net.object.bytearray.base64">
@@ -219,9 +202,6 @@
         OCw4TDE2LDI0eiIgY2xhc3M9IkdyZWVuIiAvPg0KICA8L2c+DQo8L3N2Zz4L
 </value>
   </data>
-  <metadata name="$this.TrayHeight" type="System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
-    <value>147</value>
-  </metadata>
   <data name="btnSearch.ImageOptions.SvgImage" type="DevExpress.Utils.Svg.SvgImage, DevExpress.Data.v21.2" mimetype="application/x-microsoft.net.object.bytearray.base64">
     <value>
         AAEAAAD/////AQAAAAAAAAAMAgAAAFlEZXZFeHByZXNzLkRhdGEudjIxLjIsIFZlcnNpb249MjEuMi40
@@ -246,6 +226,26 @@
         ICAgYzAuOS0zLDMuNy01LDctNXM2LjEsMiw3LDVDMjkuMSwyNiwyNi4zLDI4LDIzLDI4eiBNMjMsMjZj
         LTEuNywwLTMtMS4zLTMtM3MxLjMtMywzLTNzMywxLjMsMywzUzI0LjcsMjYsMjMsMjZ6IiBjbGFzcz0i
         QmxhY2siIC8+DQogIDwvZz4NCjwvc3ZnPgs=
+</value>
+  </data>
+  <data name="btnSearch2.ImageOptions.SvgImage" type="DevExpress.Utils.Svg.SvgImage, DevExpress.Data.v21.2" mimetype="application/x-microsoft.net.object.bytearray.base64">
+    <value>
+        AAEAAAD/////AQAAAAAAAAAMAgAAAFlEZXZFeHByZXNzLkRhdGEudjIxLjIsIFZlcnNpb249MjEuMi40
+        LjAsIEN1bHR1cmU9bmV1dHJhbCwgUHVibGljS2V5VG9rZW49Yjg4ZDE3NTRkNzAwZTQ5YQUBAAAAHURl
+        dkV4cHJlc3MuVXRpbHMuU3ZnLlN2Z0ltYWdlAQAAAAREYXRhBwICAAAACQMAAAAPAwAAANoCAAAC77u/
+        PD94bWwgdmVyc2lvbj0nMS4wJyBlbmNvZGluZz0nVVRGLTgnPz4NCjxzdmcgeD0iMHB4IiB5PSIwcHgi
+        IHZpZXdCb3g9IjAgMCAzMiAzMiIgdmVyc2lvbj0iMS4xIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcv
+        MjAwMC9zdmciIHhtbG5zOnhsaW5rPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5L3hsaW5rIiB4bWw6c3Bh
+        Y2U9InByZXNlcnZlIiBpZD0iTGF5ZXJfMSIgc3R5bGU9ImVuYWJsZS1iYWNrZ3JvdW5kOm5ldyAwIDAg
+        MzIgMzIiPg0KICA8c3R5bGUgdHlwZT0idGV4dC9jc3MiPgoJLkJsdWV7ZmlsbDojMTE3N0Q3O30KCS5Z
+        ZWxsb3d7ZmlsbDojRkZCMTE1O30KCS5CbGFja3tmaWxsOiM3MjcyNzI7fQoJLkdyZWVue2ZpbGw6IzAz
+        OUMyMzt9CgkuUmVke2ZpbGw6I0QxMUMxQzt9Cgkuc3Qwe29wYWNpdHk6MC43NTt9Cgkuc3Qxe29wYWNp
+        dHk6MC41O30KPC9zdHlsZT4NCiAgPGcgaWQ9Ilpvb20iPg0KICAgIDxwYXRoIGQ9Ik0yNy43LDI1LjNM
+        MjAuNSwxOGMxLTEuNCwxLjUtMy4yLDEuNS01YzAtNS00LTktOS05cy05LDQtOSw5YzAsNSw0LDksOSw5
+        YzEuOSwwLDMuNi0wLjYsNS0xLjVsNy4zLDcuMyAgIGMwLjMsMC4zLDAuOSwwLjMsMS4yLDBsMS4yLTEu
+        MkMyOC4xLDI2LjIsMjguMSwyNS42LDI3LjcsMjUuM3ogTTYsMTNjMC0zLjksMy4xLTcsNy03czcsMy4x
+        LDcsN2MwLDMuOS0zLjEsNy03LDdTNiwxNi45LDYsMTN6IiBjbGFzcz0iQmxhY2siIC8+DQogIDwvZz4N
+        Cjwvc3ZnPgs=
 </value>
   </data>
   <metadata name="PrintDocument1.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
diff --git a/DocumentViewer.vb b/DocumentViewer.vb
index e1e63a7..6d0e9fb 100644
--- a/DocumentViewer.vb
+++ b/DocumentViewer.vb
@@ -204,10 +204,9 @@ Public Class DocumentViewer
         _FileLoadMode = FileLoadMode.Stream
 
         _logger.Info("Loading file [{0}] from Stream", FileName)
+        SetViewerMode(oExtension)  ' Erst ViewerMode setzen ...
         FileLoaded = DoLoadFileExtension(Stream, oExtension)
-
-        SetViewerMode(oExtension)
-        UpdateMainUi()
+        UpdateMainUi()             ' ... dann UI aktualisieren
     End Sub
 
     ''' <summary>
@@ -331,15 +330,25 @@ Public Class DocumentViewer
 #Region "Form Events"
 
     Private Sub btnFitWidth_Click(ByVal sender As Object, ByVal e As EventArgs) Handles buttonFitWidth.ItemClick
-        FitToWidth()
-        _Config.Config.PageFit = Config.PageFitSetting.FitWidth
-        _Config.Save()
+        Select Case _ViewerMode
+            Case ViewerMode.GDPicture
+                FitToWidth()
+                _Config.Config.PageFit = Config.PageFitSetting.FitWidth
+                _Config.Save()
+            Case ViewerMode.Richtext
+                RichEditControl1.ActiveView.ZoomFactor = 1.0F
+        End Select
     End Sub
 
     Private Sub btnFitPage_Click(ByVal sender As Object, ByVal e As EventArgs) Handles buttonFitPage.ItemClick
-        FitToPage()
-        _Config.Config.PageFit = Config.PageFitSetting.FitPage
-        _Config.Save()
+        Select Case _ViewerMode
+            Case ViewerMode.GDPicture
+                FitToPage()
+                _Config.Config.PageFit = Config.PageFitSetting.FitPage
+                _Config.Save()
+            Case ViewerMode.Richtext
+                RichEditControl1.ActiveView.ZoomFactor = 1.0F
+        End Select
     End Sub
 
     Private Sub btnOpen_Click(sender As Object, e As EventArgs)
@@ -391,19 +400,39 @@ Public Class DocumentViewer
     End Sub
 
     Private Sub btnZoomOut_Click(sender As Object, e As EventArgs) Handles buttonZoomOut.ItemClick
-        MyGDPViewer.ZoomOUT()
+        Select Case _ViewerMode
+            Case ViewerMode.GDPicture
+                MyGDPViewer.ZoomOUT()
+            Case ViewerMode.Richtext
+                Dim oView As DevExpress.XtraRichEdit.RichEditView = RichEditControl1.ActiveView
+                oView.ZoomFactor = Math.Max(0.1F, oView.ZoomFactor - 0.1F)
+                RichEditControl1.Refresh()
+        End Select
     End Sub
 
     Private Sub btnZoomIn_Click(sender As Object, e As EventArgs) Handles buttonZoomIn.ItemClick
-        MyGDPViewer.ZoomIN()
+        Select Case _ViewerMode
+            Case ViewerMode.GDPicture
+                MyGDPViewer.ZoomIN()
+            Case ViewerMode.Richtext
+                Dim oView As DevExpress.XtraRichEdit.RichEditView = RichEditControl1.ActiveView
+                oView.ZoomFactor = Math.Min(4.0F, oView.ZoomFactor + 0.1F)
+                RichEditControl1.Refresh()
+        End Select
     End Sub
 
     Private Sub btnPrint_Click(sender As Object, e As EventArgs) Handles buttonPrint.ItemClick
-        If MyGDPViewer.PageCount = 0 Then
-            Return
-        End If
-
-        MyGDPViewer.PrintDialog()
+        Select Case _ViewerMode
+            Case ViewerMode.GDPicture
+                If MyGDPViewer.PageCount = 0 Then Return
+                MyGDPViewer.PrintDialog()
+            Case ViewerMode.Richtext
+                Using oPrintDialog As New PrintDialog()
+                    If oPrintDialog.ShowDialog(Me) = DialogResult.OK Then
+                        RichEditControl1.Print()
+                    End If
+                End Using
+        End Select
     End Sub
 
     Private Sub BtnRotateLeft_Click(sender As Object, e As EventArgs) Handles buttonRotateLeft.ItemClick
@@ -495,11 +524,12 @@ Public Class DocumentViewer
             Select Case Extension.ToUpper
                 Case "CSV"
                     _ViewerMode = ViewerMode.Excel
-                Case ".EML", ".DOC", ".DOCX", ".ODT", ".RTF", ".TXT"
+                Case ".DOC", ".DOCX", ".ODT", ".RTF", ".TXT"
                     _ViewerMode = ViewerMode.Richtext
                 Case Else
                     _ViewerMode = ViewerMode.GDPicture
             End Select
+            _logger.Debug("Viewermode set to [{0}] based on extension [{1}]", _ViewerMode, Extension)
         End If
     End Sub
     Private Sub FreeFile()
@@ -632,7 +662,7 @@ Public Class DocumentViewer
                 _logger?.Warn("GdViewer control is not initialized yet. Delaying load.")
                 Return False
             End If
-
+            _logger.Debug("Starting DoLoadFile with path [{0}] and view override [{1}]", FilePath, ViewOverride)
             Dim oFileInfo = New FileInfo(FilePath)
             Dim oExtension = oFileInfo.Extension.ToUpper
 
@@ -643,8 +673,10 @@ Public Class DocumentViewer
 
             ' Determine viewer mode and load file
             If ViewOverride = "Richtext" Then
+                _logger.Info("Loading Richtext file: {0}", FilePath)
                 Return LoadRichtextFile(FilePath, oExtension)
             ElseIf oExtension = ".CSV" Or (oExtension = ".XLSX" AndAlso oFileInfo.Length > 15000) Then
+                _logger.Debug("Loading Spreadsheet file: {0}", FilePath)
                 Return LoadSpreadsheetFile(FilePath, oExtension)
             Else
                 Return LoadGdPictureFile(FilePath, oExtension)
@@ -708,6 +740,7 @@ Public Class DocumentViewer
             Select Case Extension
                 Case ".EML", ".DOC", ".DOCX", ".XLS", ".XLSX", ".ODT", ".RTF", ".TXT"
                     MyGDPViewer.ForceTemporaryMode = True
+                    _logger.Info("ForceTemporaryMode enabled for extension [{0}]", Extension)
             End Select
 
             MyGDPViewer.DocumentAlignment = ViewerDocumentAlignment.DocumentAlignmentTopCenter
@@ -830,7 +863,6 @@ Public Class DocumentViewer
                         ShowGdViewer()
                     End If
             End Select
-            UpdateMainUi()
             Return True
         Catch ex As Exception
             _logger.Error(ex)
@@ -908,6 +940,9 @@ Public Class DocumentViewer
     End Function
 
     Private Sub UpdateMainUi()
+        If Not IsNothing(_logger) Then
+            _logger.Info("Updating main UI for viewer mode [{0}]", _ViewerMode)
+        End If
 
         Select Case _Config?.Config?.PageFit
             Case Config.PageFitSetting.FitPage
@@ -969,7 +1004,28 @@ Public Class DocumentViewer
                 btnNextHighlight.Visibility = ToVisibility(False)
                 btnPrevHighlight.Visibility = ToVisibility(False)
             Case Else
-                ToolbarDocumentViewer.Visible = False
+                ToolbarDocumentViewer.Visible = True
+
+                buttonPrint.Visibility = XtraBars.BarItemVisibility.Always
+                buttonFitWidth.Visibility = XtraBars.BarItemVisibility.Always
+                buttonFitPage.Visibility = XtraBars.BarItemVisibility.Always
+                buttonZoomIn.Visibility = XtraBars.BarItemVisibility.Always
+                buttonZoomOut.Visibility = XtraBars.BarItemVisibility.Always
+                buttonRotateLeft.Visibility = XtraBars.BarItemVisibility.Never
+                buttonRotateRight.Visibility = XtraBars.BarItemVisibility.Never
+                buttonFlipX.Visibility = XtraBars.BarItemVisibility.Never
+                buttonFlipY.Visibility = XtraBars.BarItemVisibility.Never
+                buttonSettings.Visibility = XtraBars.BarItemVisibility.Never
+                txtSearch.Visibility = XtraBars.BarItemVisibility.Never
+                btnSearch2.Visibility = XtraBars.BarItemVisibility.Never
+                btnNextHighlight.Visibility = XtraBars.BarItemVisibility.Never
+                btnPrevHighlight.Visibility = XtraBars.BarItemVisibility.Never
+                buttonFirstPage.Visibility = XtraBars.BarItemVisibility.Never
+                buttonPrevPage.Visibility = XtraBars.BarItemVisibility.Never
+                buttonNextPage.Visibility = XtraBars.BarItemVisibility.Never
+                buttonLastPage.Visibility = XtraBars.BarItemVisibility.Never
+                txtCurrentPage.Visibility = XtraBars.BarItemVisibility.Never
+
         End Select
     End Sub
 
diff --git a/DocumentViewer.vbproj b/DocumentViewer.vbproj
index 7bfe3f7..caaf210 100644
--- a/DocumentViewer.vbproj
+++ b/DocumentViewer.vbproj
@@ -144,77 +144,98 @@
     <Reference Include="DocumentFormat.OpenXml.Framework, Version=3.2.0.0, Culture=neutral, PublicKeyToken=8fb06cb64d019a17, processorArchitecture=MSIL">
       <HintPath>packages\DocumentFormat.OpenXml.Framework.3.2.0\lib\net46\DocumentFormat.OpenXml.Framework.dll</HintPath>
     </Reference>
-    <Reference Include="GdPicture.NET.14, Version=14.3.3.0, Culture=neutral, PublicKeyToken=f52a2e60ad468dbb, processorArchitecture=MSIL">
-      <HintPath>packages\GdPicture.14.3.3\lib\net462\GdPicture.NET.14.dll</HintPath>
+    <Reference Include="GdPicture.NET.14, Version=14.4.4.0, Culture=neutral, PublicKeyToken=f52a2e60ad468dbb, processorArchitecture=MSIL">
+      <HintPath>packages\GdPicture.14.4.4\lib\net462\GdPicture.NET.14.dll</HintPath>
     </Reference>
-    <Reference Include="GdPicture.NET.14.barcode.1d.writer, Version=14.3.3.0, Culture=neutral, PublicKeyToken=f52a2e60ad468dbb, processorArchitecture=MSIL">
-      <HintPath>packages\GdPicture.14.3.3\lib\net462\GdPicture.NET.14.barcode.1d.writer.dll</HintPath>
+    <Reference Include="GdPicture.NET.14.barcode.1d.writer, Version=14.4.4.0, Culture=neutral, PublicKeyToken=f52a2e60ad468dbb, processorArchitecture=MSIL">
+      <HintPath>packages\GdPicture.14.4.4\lib\net462\GdPicture.NET.14.barcode.1d.writer.dll</HintPath>
     </Reference>
-    <Reference Include="GdPicture.NET.14.barcode.2d.writer, Version=14.3.3.0, Culture=neutral, PublicKeyToken=f52a2e60ad468dbb, processorArchitecture=MSIL">
-      <HintPath>packages\GdPicture.14.3.3\lib\net462\GdPicture.NET.14.barcode.2d.writer.dll</HintPath>
+    <Reference Include="GdPicture.NET.14.barcode.2d.writer, Version=14.4.4.0, Culture=neutral, PublicKeyToken=f52a2e60ad468dbb, processorArchitecture=MSIL">
+      <HintPath>packages\GdPicture.14.4.4\lib\net462\GdPicture.NET.14.barcode.2d.writer.dll</HintPath>
     </Reference>
-    <Reference Include="GdPicture.NET.14.CAD, Version=14.3.3.0, Culture=neutral, PublicKeyToken=f52a2e60ad468dbb, processorArchitecture=MSIL">
-      <HintPath>packages\GdPicture.14.3.3\lib\net462\GdPicture.NET.14.CAD.dll</HintPath>
+    <Reference Include="GdPicture.NET.14.CAD, Version=14.4.4.0, Culture=neutral, PublicKeyToken=f52a2e60ad468dbb, processorArchitecture=MSIL">
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-      <HintPath>packages\GdPicture.14.3.3\lib\net462\GdPicture.NET.14.MSOfficeBinary.dll</HintPath>
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-      <HintPath>packages\GdPicture.14.3.3\lib\net462\GdPicture.NET.14.OpenXML.dll</HintPath>
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-      <HintPath>packages\GdPicture.14.3.3\lib\net462\GdPicture.NET.14.PDF.dll</HintPath>
+    <Reference Include="GdPicture.NET.14.OpenXML.Templating, Version=14.4.4.0, Culture=neutral, PublicKeyToken=f52a2e60ad468dbb, processorArchitecture=MSIL">
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-      <HintPath>packages\GdPicture.14.3.3\lib\net462\GdPicture.NET.14.RTF.dll</HintPath>
+    <Reference Include="GdPicture.NET.14.PDF, Version=14.4.4.0, Culture=neutral, PublicKeyToken=f52a2e60ad468dbb, processorArchitecture=MSIL">
+      <HintPath>packages\GdPicture.14.4.4\lib\net462\GdPicture.NET.14.PDF.dll</HintPath>
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-      <HintPath>packages\GdPicture.14.3.3\lib\net462\GdPicture.NET.14.SVG.dll</HintPath>
+    <Reference Include="GdPicture.NET.14.RTF, Version=14.4.4.0, Culture=neutral, PublicKeyToken=f52a2e60ad468dbb, processorArchitecture=MSIL">
+      <HintPath>packages\GdPicture.14.4.4\lib\net462\GdPicture.NET.14.RTF.dll</HintPath>
+    </Reference>
+    <Reference Include="GdPicture.NET.14.SVG, Version=14.4.4.0, Culture=neutral, PublicKeyToken=f52a2e60ad468dbb, processorArchitecture=MSIL">
+      <HintPath>packages\GdPicture.14.4.4\lib\net462\GdPicture.NET.14.SVG.dll</HintPath>
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     <Reference Include="GdPicture.NET.14.wia.gateway, Version=1.0.0.0, Culture=neutral, PublicKeyToken=6973b5c22dcf45f7, processorArchitecture=MSIL">
-      <HintPath>packages\GdPicture.14.3.3\lib\net462\GdPicture.NET.14.wia.gateway.dll</HintPath>
+      <HintPath>packages\GdPicture.14.4.4\lib\net462\GdPicture.NET.14.wia.gateway.dll</HintPath>
       <EmbedInteropTypes>True</EmbedInteropTypes>
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-      <HintPath>packages\Microsoft.Bcl.AsyncInterfaces.8.0.0\lib\net462\Microsoft.Bcl.AsyncInterfaces.dll</HintPath>
+    <Reference Include="Google.Protobuf, Version=3.33.2.0, Culture=neutral, PublicKeyToken=a7d26565bac4d604, processorArchitecture=MSIL">
+      <HintPath>packages\Google.Protobuf.3.33.2\lib\net45\Google.Protobuf.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.Bcl.AsyncInterfaces, Version=10.0.0.5, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
+      <HintPath>packages\Microsoft.Bcl.AsyncInterfaces.10.0.5\lib\net462\Microsoft.Bcl.AsyncInterfaces.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.Bcl.Cryptography, Version=10.0.0.5, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
+      <HintPath>packages\Microsoft.Bcl.Cryptography.10.0.5\lib\net462\Microsoft.Bcl.Cryptography.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.Bcl.HashCode, Version=6.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
+      <HintPath>packages\Microsoft.Bcl.HashCode.6.0.0\lib\net462\Microsoft.Bcl.HashCode.dll</HintPath>
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     <Reference Include="Microsoft.CSharp" />
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       <HintPath>packages\Microsoft.Win32.Registry.5.0.0\lib\net461\Microsoft.Win32.Registry.dll</HintPath>
     </Reference>
+    <Reference Include="NativeSDK.Exceptions, Version=14.4.4.0, Culture=neutral, PublicKeyToken=f52a2e60ad468dbb, processorArchitecture=MSIL">
+      <HintPath>packages\GdPicture.14.4.4\lib\net462\NativeSDK.Exceptions.dll</HintPath>
+    </Reference>
+    <Reference Include="NativeSDK.Settings, Version=14.4.4.0, Culture=neutral, PublicKeyToken=f52a2e60ad468dbb, processorArchitecture=MSIL">
+      <HintPath>packages\GdPicture.14.4.4\lib\net462\NativeSDK.Settings.dll</HintPath>
+    </Reference>
+    <Reference Include="NativeSDK.Settings.Edition, Version=14.4.4.0, Culture=neutral, PublicKeyToken=f52a2e60ad468dbb, processorArchitecture=MSIL">
+      <HintPath>packages\GdPicture.14.4.4\lib\net462\NativeSDK.Settings.Edition.dll</HintPath>
+    </Reference>
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@@ -224,8 +245,8 @@
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+    <Reference Include="OpenMcdf, Version=3.1.4.0, Culture=neutral, PublicKeyToken=fdbb1629d7c00800, processorArchitecture=MSIL">
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     <Reference Include="PresentationFramework" />
@@ -239,61 +260,73 @@
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     </Reference>
     <Reference Include="System.Configuration" />
     <Reference Include="System.Data" />
     <Reference Include="System.Deployment" />
     <Reference Include="System.Drawing" />
+    <Reference Include="System.Formats.Asn1, Version=10.0.0.5, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
+      <HintPath>packages\System.Formats.Asn1.10.0.5\lib\net462\System.Formats.Asn1.dll</HintPath>
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     <Reference Include="System.IO.Compression" />
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-      <HintPath>packages\System.IO.Packaging.8.0.1\lib\net462\System.IO.Packaging.dll</HintPath>
+    <Reference Include="System.IO.Packaging, Version=10.0.0.5, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+      <HintPath>packages\System.IO.Packaging.10.0.5\lib\net462\System.IO.Packaging.dll</HintPath>
+    </Reference>
+    <Reference Include="System.IO.Pipelines, Version=10.0.0.5, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
+      <HintPath>packages\System.IO.Pipelines.10.0.5\lib\net462\System.IO.Pipelines.dll</HintPath>
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-      <HintPath>packages\System.Memory.4.6.0\lib\net462\System.Memory.dll</HintPath>
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-      <HintPath>packages\System.Numerics.Vectors.4.6.0\lib\net462\System.Numerics.Vectors.dll</HintPath>
+    <Reference Include="System.Numerics.Vectors, Version=4.1.6.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
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-      <HintPath>packages\System.Text.Json.8.0.6\lib\net462\System.Text.Json.dll</HintPath>
+    <Reference Include="System.Text.Encodings.Web, Version=10.0.0.5, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
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+      <HintPath>packages\System.Threading.Channels.10.0.5\lib\net462\System.Threading.Channels.dll</HintPath>
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   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.VisualBasic.targets" />
-  <Import Project="packages\GdPicture.runtimes.windows.14.3.3\build\net462\GdPicture.runtimes.windows.targets" Condition="Exists('packages\GdPicture.runtimes.windows.14.3.3\build\net462\GdPicture.runtimes.windows.targets')" />
+  <Import Project="packages\GdPicture.runtimes.windows.14.4.4\build\net462\GdPicture.runtimes.windows.targets" Condition="Exists('packages\GdPicture.runtimes.windows.14.4.4\build\net462\GdPicture.runtimes.windows.targets')" />
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
     <PropertyGroup>
       <ErrorText>Dieses Projekt verweist auf mindestens ein NuGet-Paket, das auf diesem Computer fehlt. Verwenden Sie die Wiederherstellung von NuGet-Paketen, um die fehlenden Dateien herunterzuladen. Weitere Informationen finden Sie unter "http://go.microsoft.com/fwlink/?LinkID=322105". Die fehlende Datei ist "{0}".</ErrorText>
     </PropertyGroup>
-    <Error Condition="!Exists('packages\GdPicture.runtimes.windows.14.3.3\build\net462\GdPicture.runtimes.windows.targets')" Text="$([System.String]::Format('$(ErrorText)', 'packages\GdPicture.runtimes.windows.14.3.3\build\net462\GdPicture.runtimes.windows.targets'))" />
+    <Error Condition="!Exists('packages\GdPicture.runtimes.windows.14.4.4\build\net462\GdPicture.runtimes.windows.targets')" Text="$([System.String]::Format('$(ErrorText)', 'packages\GdPicture.runtimes.windows.14.4.4\build\net462\GdPicture.runtimes.windows.targets'))" />
   </Target>
 </Project>
\ No newline at end of file
diff --git a/My Project/AssemblyInfo.vb b/My Project/AssemblyInfo.vb
index b434c0c..aa30cbb 100644
--- a/My Project/AssemblyInfo.vb	
+++ b/My Project/AssemblyInfo.vb	
@@ -31,5 +31,5 @@ Imports System.Runtime.InteropServices
 ' übernehmen, indem Sie "*" eingeben:
 ' <Assembly: AssemblyVersion("1.0.*")>
 
-<Assembly: AssemblyVersion("2.7.1.0")>
-<Assembly: AssemblyFileVersion("2.7.1.0")>
+<Assembly: AssemblyVersion("2.7.2.0")>
+<Assembly: AssemblyFileVersion("2.7.2.0")>
diff --git a/packages.config b/packages.config
index afc492f..1d7c703 100644
--- a/packages.config
+++ b/packages.config
@@ -3,33 +3,40 @@
   <package id="BouncyCastle.Cryptography" version="2.5.0" targetFramework="net462" />
   <package id="DocumentFormat.OpenXml" version="3.2.0" targetFramework="net462" />
   <package id="DocumentFormat.OpenXml.Framework" version="3.2.0" targetFramework="net462" />
-  <package id="GdPicture" version="14.3.3" targetFramework="net462" />
-  <package id="GdPicture.runtimes.windows" version="14.3.3" targetFramework="net462" />
+  <package id="GdPicture" version="14.4.4" targetFramework="net462" />
+  <package id="GdPicture.runtimes.windows" version="14.4.4" targetFramework="net462" />
+  <package id="Google.Protobuf" version="3.33.2" targetFramework="net462" />
   <package id="Microsoft.AspNet.WebApi.Client" version="6.0.0" targetFramework="net462" />
-  <package id="Microsoft.Bcl.AsyncInterfaces" version="8.0.0" targetFramework="net462" />
+  <package id="Microsoft.Bcl.AsyncInterfaces" version="10.0.5" targetFramework="net462" />
+  <package id="Microsoft.Bcl.Cryptography" version="10.0.5" targetFramework="net462" />
+  <package id="Microsoft.Bcl.HashCode" version="6.0.0" targetFramework="net462" />
   <package id="Microsoft.CSharp" version="4.7.0" targetFramework="net462" />
   <package id="Microsoft.VisualBasic" version="10.3.0" targetFramework="net462" />
   <package id="Microsoft.Win32.Registry" version="5.0.0" targetFramework="net462" />
   <package id="Newtonsoft.Json" version="13.0.3" targetFramework="net462" />
   <package id="Newtonsoft.Json.Bson" version="1.0.2" targetFramework="net462" />
   <package id="NLog" version="5.0.5" targetFramework="net461" />
-  <package id="OpenMcdf" version="2.4.1" targetFramework="net462" />
+  <package id="OpenMcdf" version="3.1.4" targetFramework="net462" />
   <package id="protobuf-net" version="3.2.46" targetFramework="net462" />
   <package id="protobuf-net.Core" version="3.2.46" targetFramework="net462" />
   <package id="RtfPipe" version="2.0.7677.4303" targetFramework="net462" />
-  <package id="System.Buffers" version="4.6.0" targetFramework="net462" />
+  <package id="System.Buffers" version="4.6.1" targetFramework="net462" />
   <package id="System.CodeDom" version="8.0.0" targetFramework="net462" />
-  <package id="System.Collections.Immutable" version="8.0.0" targetFramework="net462" />
-  <package id="System.IO.Packaging" version="8.0.1" targetFramework="net462" />
+  <package id="System.Collections.Immutable" version="10.0.5" targetFramework="net462" />
+  <package id="System.Formats.Asn1" version="10.0.5" targetFramework="net462" />
+  <package id="System.IO.Packaging" version="10.0.5" targetFramework="net462" />
+  <package id="System.IO.Pipelines" version="10.0.5" targetFramework="net462" />
   <package id="System.Management" version="8.0.0" targetFramework="net462" />
-  <package id="System.Memory" version="4.6.0" targetFramework="net462" />
-  <package id="System.Numerics.Vectors" version="4.6.0" targetFramework="net462" />
-  <package id="System.Runtime.CompilerServices.Unsafe" version="6.1.0" targetFramework="net462" />
+  <package id="System.Memory" version="4.6.3" targetFramework="net462" />
+  <package id="System.Numerics.Vectors" version="4.6.1" targetFramework="net462" />
+  <package id="System.Runtime.CompilerServices.Unsafe" version="6.1.2" targetFramework="net462" />
   <package id="System.Security.AccessControl" version="5.0.0" targetFramework="net462" />
-  <package id="System.Security.Cryptography.Pkcs" version="8.0.1" targetFramework="net462" />
+  <package id="System.Security.Cryptography.Pkcs" version="10.0.5" targetFramework="net462" />
   <package id="System.Security.Principal.Windows" version="5.0.0" targetFramework="net462" />
-  <package id="System.Text.Encodings.Web" version="8.0.0" targetFramework="net462" />
-  <package id="System.Text.Json" version="8.0.6" targetFramework="net462" />
-  <package id="System.Threading.Tasks.Extensions" version="4.5.4" targetFramework="net462" />
-  <package id="System.ValueTuple" version="4.5.0" targetFramework="net462" />
+  <package id="System.Text.Encoding.CodePages" version="8.0.0" targetFramework="net462" />
+  <package id="System.Text.Encodings.Web" version="10.0.5" targetFramework="net462" />
+  <package id="System.Text.Json" version="10.0.5" targetFramework="net462" />
+  <package id="System.Threading.Channels" version="10.0.5" targetFramework="net462" />
+  <package id="System.Threading.Tasks.Extensions" version="4.6.3" targetFramework="net462" />
+  <package id="System.ValueTuple" version="4.6.1" targetFramework="net462" />
 </packages>
\ No newline at end of file