Stryker has sent me the log too.
The same issue in both cases - the rar-renamer renames one file for a not obvious reason. I have to investigate that further.
And there is a bug in direct unpack process which in certain cases causes the deletion of files after a failure (it thinks all was extracted successful and cleans up). This will be fixed very soon. I also want to fix the rar-renamer thing too but that's not critical; when the direct unpack deletion is fixed the files will be processed correctly. The issue with rar-renamer however causes the files to be unpacked again by normal unpack module, that's why a fix in rar-rename would be good too.
In the meantime set option RarRename=no as a workaround until the fixes are available.
Can you both please send me the nzb-files to email@example.com