Unzipping my GDrom always says "Trailing garbage?" Eh?

[FTE]

Ok, I've followed everything in the serial slave uploading directions everytime I rip a game and get a zipped track03 or/and track05 or/and a wav file and then I go to unzip and everytime it says something about "trailing garbage and session ended" and I'm left with an iso or isos that won't extract out my 1st_read or Ip Bins? I'm really confused, help! FTE