I know I know.. this has been asked and talked about before. Never the less, can't find a solution and every driver seems to just not work better than my older driver. My specs: May 2011 iMac 21.5 i5 2.5ghz 16GB AMD Radeon HD 6750M Every time I download the latest Catalyst I get an error message stating the following. "AMD Catalyst Mobility cannot be downloaded due to incompatible hardware/software on your computer. Your computer does not contain a proper graphics adapter". Any help with this issue?