Error 80010017 (ISO)

hi there, i have a ps3 with cfw3.55, and i'm having some problems, running specific games, that are in iso format. I've already downloaded ps2jb, and extracted the games, then when i try to run them (internal or external, with bd in drive), allways gives me the error 80010017. is there anyway to run the games that come in .iso format or some tuto how to extract them properly?
thanks in advance:ciao: