GPSP emulator loading issue

I know i'm late to the game, but I'd appreciate help.

I have a PSP 2000 (says 2001 if that matters) running firmware 6.60 with cfw 6.60 PRO-C Fix3. (Found on nicoblog). I've tried different versions of GPSP and get the same results every time. I get to the game loading screen and when I load the game the Gameboy Advance opening screen appears, makes it's wonderful little noise, then just sits there and nothing happens.

I can press menu and get back to the psp menu and I can get back to the gpsp menu so it's not frozen. Any thoughts? Thanks for your help!