That sounds like a very unique issue. I have a few questions for you.
Is it only one sequence file that gets deleted? If the sequence file you are running does not get deleted, but another one does, is it always the same files every time that gets deleted?
If we can get this nailed down to a pattern, we can probably figure out
what is causing this issue. One other thing that would be worthwhile
checking out is if this problem is limited to just one computer or
multiple computers. Is your testing station limited to just the one
computer? If not, does this problem happen on multiple machines?
Another thing you might want to try is to put each sequence file in a different directory. If you have the sequence files in different directories, does the problem still occur?
Russell G.
NI Applications Engineering