Make sure you renamed your folders and have the most to update emulators. As for PSX Games....you'll need the 5.50 gen-a popsloader.
File Details-Popsloader-5.50GEN-PSP-Homebrew-Applications -
If that doesn't work, try a regular popsloader using the diff firmwares....
This is probably the reasons i never updated past 4.01 M33-2 w/ 1.5 kernel