What version of PT3 do you have?
If it isn't one of the current versions, please update:
Download pagePT3 Build History / Release NotesHow many sessions for this player? Have you selected all of the sessions?
One thing which can cause exports not to work is if you have imported observed hands with the option to save observed hand histories turned off, but it doesn't sound like that is the case here since it sounds like hands you played?
Can you view the hand histories for some of these hands in PT3, or see them in the Replayer?
If so, then they should export OK.
If the export still won't work please
report your problem - your log files should let us see what is going on.
You can't export only what is included in the vs Player report from PT3, but I expect this sort of thing to be possible in PT4.