I am writing an application in VB.NET (2008). Since I am a beginner, I use datasets.

During training I had no problems adding FillBy's to the tableadapters on an SQL Server Database. But when I even change the standard "Fill" (just to add a WHERE clause), my dataset gets corrupt after save, and my working parts of the program do not find table adapters, tables,....

Can anyone help me?

I am using Visual Studio (VB) .NET 2008, with Oracle 10g

Thx in advance