Don’t you like when you find two bugs in a row? Apart from this other bug, I also found this one using the add-in wizard of Visual Studio, and again the curious part is that it worked in Visual Studio 2005, but was broken in Visual Studio 2008 and the bug persists.
I have reported to Microsoft Connect:
Error occurred in add-in wizard if add-in project created inside solution folder:
and I have documented in the MZ-Tools Series articles:
BUG: Error occurred in add-in wizard if add-in project created inside solution folder: