jj: throw exception instead of swallowing

EDMDesigner/FrmMain.vb

@@ -57,7 +57,7 @@ Public Class FrmMain
 
     Private Sub Init()
         _firebird = New Firebird(_logConfig, My.Settings.fbDatasource, My.Settings.fbDatabaseLocation, My.Settings.fbUser, My.Settings.fbPassword)
-        
+
         If _firebird.ConnectionFailed Then
             MsgBox("Database connection failed. Please check the log.", vbCritical)
             Exit Sub