Problem running CPS-2 emulator on HBL on the PSP

So, I put the latest HBL on my PSP, signed for OFW 6.37. I’m trying to load the CPS-2 emulator on there, and it’s the “14989_cps2psp_2.3.1_3.xx_user” version. This HBL can boot on my PSP without a hacked save data.

Just so you know, I’m running this on a PSP-2001.

When I load the emulator, I get this error that says something like “(numbers) SystemButtons.prx.”.

Is there a way I can fix this?

Any help would be appreciated.