VB.NET Dataset designer generated dataset1.designer

delete all the ds*.designer.vb, don't worry because it can be regenerated. Close your project. Edit the project.vbproj file in XML mode. You will find an entry in the group that reads:

1:  <None Include="*myDataSet*.xsd">  
2:   <SubType>Designer</SubType>  
3:   <Generator>MSDataSetGenerator</Generator>  
4:   <LastGenOutput>*myDataSet*1.Designer.cs</LastGenOutput>  
5:  </None>  

Change the item to remove the "1". Save and close the file. Reopen your project. When you regenerate your dataset, it should be back to normal.