Most of the time when i get that msg,
It's b/c the wrong files (another slot) were sent,not uncomman when playing multi pbem games.
When extracting or loading, check if file #'s are the same as the slot you are playing,also make sure they are loaded in the correct game ie;WW2,MBT.
Simple way to not get confused.is to title your return msg and files, with battle and and slot number and whether it's WW2 or MBT