That's quite possible, but I would really like to be able to solve the problem.
How about this: I'll send you a DLL that will write the file it is processing to vs.log. This is pretty well tested, so it should be a problem with that specific file (I hope), not an accumulative problem. You can look at the last file in vs.log, see what the filename is, open the file, and see if you can send it to me.
If this will work, you can PM me an email address to send the new DLL to.