>I recompile all files every time I build. and never get errors during the compile and link. The only time I find these things is when I run into problems that have completely no logic at all, then I decide to step and when I run into these, I replace with backups of the same exact code (unchanged (same mod date even)) and it works ok after that. I think I have only run into this about three times now total including this one.

That's quite peculiar, sounds like maybe something didn't install quite right, possibly, or there's a clock file/time problem, another possibility. But, if you have an easy working fix, that's what really matters.