Ok, thanks. Is there any way to figure out which parts are now missing due to yencdecoder deleting them? I'd like to re-download just those parts if at all possible. While the headers may not be "correct", I do know these files have worked for others, so perhaps I just need to handle these manually. I don't think the null filename itself is the problem (the smaller file I downloaded was named just the same, and worked fine), I think it's just the fact that for this null filename an extra "x" got added to the end of each filename, eventually making it too long (this bigger file got 60% decoded before it bombed out, by that time the file names just had too many x's).
If I have to proceed manually, that's fine, I'm just trying to figure out how to do it without having to re-downlaod the data I already have.
Thanks!