I have Palit 4850, and after installing this patch I got solid grey screen on both monitors. Any ideas how this can be fixed? Thanks. p.s. I've used default Maverics AMD4800 driver before, just added my DEV_ID and installed EVOEnabler.kext,and it worked fine, but was very slow at windows drawing (safari startup was around 20 sec.). Do I need any GraphicsEnabler=Yes, EvoEnabler and something like this, to use this patch?