install MVP
install BLT let it overwrite files (search for Great Big Bushy Beard's blt fix don't use the regular BLT)
install BLT:CSE let it overwrite
then run the bundlefixer from Great Big Bushy Beard's blt fix, close steam first and only run it once
Play Payday when prompted in game to update BLT don't.
there you go the current known way to get MVP working.