NesterJ on PSP isn't cooperating when it comes to save states.

I've been trying to use NesterJ (the NES emulator) on my modified PSP-2000, and there's only maybe a 30% chance that I can load a save state after it appears to save. Most of the time it just says "Load state failed". The system has the M33-6 custom firmware right now, and I installed it with a program that puts ChickHEN on the PSP's memory stick without having to use a Pandora Battery. It was kind of a risky measure since I couldn't figure out what type of motherboard it has, but it's worked with most everything else I've tried. The only other weird thing was that Ace Combat X seemed to be playing the wrong cutscene audio during cutscenes, and this one piece of cutscene audio plays every time you go into the mission preparation screen, but it could be that it's just a bad ISO. Anyway, has anyone else had problems with save states in NesterJ? If so, is there a way to fix it, or is this something we have to wait for the developers of the program to fix?