Error 80020148

[stika]

So i own a PSP 1000

for a year now i'v been using firmware 3.52, a few days ago i decided to update it and now i'm using firmware 5.00 M33


but now some of my emulators are presenting an arror message "can not start the game (80020148)

[Tesseract]

If I don't miss my guess, isn't this the error one gets when you try to run 1.50 firmware homebrew without the proper support?

Try grabbing the 1.50 'patch' for 5.00M33 (And the M33-4 update while you're at it) and see if that helps.