reference to Visio pro 2007
still trying to fault find this one, my gut feel its in the reference libraries.
When I uncheck "Microsoft outlook 12 library..." the app become more. I can't say entirely stable because I have to do many repeats under all circumstances to be 100% correct.
But I know there are a few developers out there that have noted this problem.
also if you hit a debug in the code at any time during run time you must compile before save.