Unsupported commpression?

ok, i've been messing around with skins for awhile now but most of the time i get the Unsupported commpression error. Is there a way to avoid this >< (btw i have psp 7)

I used to get this with PSP. Just uncheck the "compress" when you are saving it to tga. It's in the file dialog somewhere in PSP.

And make sure you leave it at the defaults in your .blp/.tga converter.