mover.cpp
Code:
if( 1 < nMemberSize )
pEnemy->AddExperienceParty( pDead, fExpValuePerson, pMoverProp, fFxpValue, pParty, apMember, &nTotalLevel, &nMaxLevel10, &nMaxLevel, &nMemberSize );
else
pEnemy->AddExperienceSolo( fExpValuePerson, pMoverProp, fFxpValue, TRUE );
change if( 1 < nMemberSize ) to if( 0 < nMemberSize ) and it should work (I've tested and worked)
Idk how the exp would be with such a minor edit.. you should make some tests and look around the code or make some changes to it.