Thanks for the feedback.
Yep Kihaku, I have already tried it on another machine. Same weird thing! Hm Fogman, hard to say, but it is in the range of at 8000 to 12000 lines of code.
Very perplexing. And frustrating! And not mentioned in the documentation error messages either. It has happened at a very bad time too, when I have a deliverable to deliver... :S yikes