OK - found a bug - if a file and it' description get split up between two different drives, then the program fails to download that file... i.e.
File 13640 is in /drive1/fids/13640, while
file 13641 is in /drive0/fids/13641 - your app fails in this case, although the debug screen doesn't show an error (and in fact shows the file going through...) maybe check if the file exists, and if it doesn't check the other drive?
-mark

MK2: 36gb
Tivo: 90gb
CPU: 120gb
...I think drive manufacturers love me!