In the last days I have stumbled across some strange NZB files, where the filenames are shown correctly in Alt.Binz, however when saved to disk they seem to get random names, without extensions. For all the other files this is no problem, as they would be renamed by the PAR2 files, however the PAR2 files are also without extension and as a result they are not recognized as such, so the whole folder remains untouched and no PAR2 checking / Renaming and Unraring is done.
If you find the PAR2 file and manually add the PAR2 extension to it and import it to Alt.Binz, all is fine. Except if any further PAR2 files are needed in which case these need to be manually renamed as well.
Have not found many of these filesets and since one can manually handle them, this not really a big problem, however I though RDL might want to have a look at it, so I have sent RDL a sample NZB of such a fileset, via PM.