Well i got everything working in the end by using another Kext installer prior to installing the EDP.
Basically my procedure was:
-USB image from osxlatitude.com
-Installed in safe boot.
-Restart in chameleon, selecting hard drive, also safe boot.
-Installed Kext installer from other website (contains chameleon also)
-Restarted (normal)
-Installed EDP 1.9.1
-Restarted (normal)
Everything is stable, but i cannot do updates (which i'm fine with)