Well as I said I have deleted the files many times before. Tried it again and no luck. Still hangs.
I can't delete individually tho. Don't ever remember having that option, but then again, I usually just dump the whole thing at once. Never tried to dump one until now.
This is probably going to end up one of those "sucks being me" annoyances.
I never tried deleting just one as well, tried this morning and I can't either. So it's not just you that can't delete just one.
Anyways, I'll do some research today while I'm at work and see if I can find anything that corresponds to the problem you're having.