ttallskog: You are not going crazy. I have the same issues with the VS 2008 release on 3.5 release on vista, mappoint 2006. I've been programming mappoint since 2004 version and never had any issues with vs 2005. Does ANYBODY on this forum actually program with VS 2008
I've linked this to the thread I have already started AGAIN. I hope programmers at ms see this cause right now, it aint workin!

Mappoint 2006, C#, VS 2008, Vista, COM object problems