I've had a similar problem that I posted few days ago. The problem appeared after installing the latest version (8.04). I have a Digi002 running on Windows XP , Sp3. Please check out this thread:
http://duc.digidesign.com/showthread.php?t=279417
I make midi files constantly, and it's so annoying that I can no longer use pro tools to do that. In my case, everytime i hit export, the Task Manger window pops up, as if it's doing something in the background. It goes on forever. The midi file that's exported, is corrupted, and not recognized by any Software that I own. I've tried both 0 and 1 formats by the way.
Is anybody able to export midi with pro tools 8.04?