Audit roms then DELETE ALOT of them will freeze crash the program and roms not deleted

Delete alot of roms, like a couple hundred or not not sure how many, from the audit roms window. I did it bny deleting all japanese roms from nes section. The program wil now FREEZE up. The roms will be removed from hte list upon ctrl alt del but they wont be deleted. BAsically non working feature when doping this.