Emulators not working after upgrading to CFW 5.50 GEN-B

I've upgraded from CFW 5.00 M33-6 to 5.50 GEN-B

pspgenesis, MMSPlus, snes9x TYL, and Doom for PSP all give me the following error:

The game could not be started. (80020148)

I've placed the emulator files in PSP/GAME150
I've used the recovery menu to set it to the 1.50 Kernel.

I've tried placing the files in PSP/GAME, and PSP/GAME5XX with it set to the 1.50 kernel and the 5.XX kernel. No change.

I installed snes9x when I installed GEN-B, but all the others were installed and working fine with 5.00 M33-6.

Stuff from roughly the 1.50 - 2.71 era do not work in GEN.