Glad you found your problem. Please don't get too discouraged, I've worked with Platform Builder for a _very_ long time and things like that just happen now and then. You never know when something really obscure is going to ruin your whole day
When I get really stumped, I tend to go straight to the newsgroups at:
http://groups.google.com/...indowsce.platbuilder
Regards,
--mikee