small tweaks

Controls.DocumentViewer/DocumentViewer.vb

@@ -103,7 +103,6 @@ Public Class DocumentViewer
                     _docPath = FilePath
 
                     GdViewer.DisplayFromFile(_docPath)
-                    GdViewer.Focus()
 
                     RichEditControl1.Visible = False
                     RichEditControl1.Dock = DockStyle.None
@@ -502,6 +501,7 @@ Public Class DocumentViewer
             Try
                 IO.File.Delete(oFile)
             Catch ex As Exception
+                _logger.Warn("Could not delete temp file {0}", oFile)
             End Try
         Next
     End Sub