After a day of work , this seemingly non worrying condition has gotten worse.
Previews will no longer run, and the same error message pops up.
I tried exporting an EXE and that doesnt work either.
I have a earlier saved version of the .cap that works ok, but after adding a few more functions, it craps out in the same way..
Check your task manager for instances of temp.exe and dr. watson and end-task them if they're there. Then try previewing your app again and it should work.
I get this same issue every once in a while, but I haven't yet noticed a pattern, and I haven't been able to recreate it on demand 100% of the time so I haven't done a bug report on it yet...