Thanks for all your help. Although nothing actually worked to step into the code, it led me to the answer. I started looking back in to TFS. Somehow the references were changed in the vbproj file. The application actually needs to reference the 11.1.201111.2111 version not the 11.1.20111.1003 version. I changed the reference and now I am up and running.

Alan,

I took your suggestion – You can uncheck the Enable Just My Code option in the debugger options and enable Framework Source Stepping to change this behavior. I still can't step into the form.

Here is the Stack Trace. I don't see much help there.

at QualCorp.QueryPlus.UI.frmMain..ctor()
at QualCorp.QueryPlus.UI.QueryPlus.Startup.Main() in C:\Users\dsmith.QCI.000\Documents\Visual Studio 2010\Projects\QueryPlus 5.0\QueryPlusCopyright\QueryPlus\QueryPlus5\UI\Module1.vb:line 42
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()

Here is the exception.

{"Could not load file or assembly 'Infragistics2.Win.v11.1, Version=11.1.20111.2111, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb' or one of its dependencies. The system cannot find the file specified.":"Infragistics2.Win.v11.1, Version=11.1.20111.2111, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb"}

Here is the inner exception.

{"Could not load file or assembly 'Infragistics2.Win.v11.1, Version=11.1.20111.1003, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb' or one of its dependencies. The system cannot find the file specified.":"Infragistics2.Win.v11.1, Version=11.1.20111.1003, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb"}