I am using an Alienware m18x R2 with dual AMD Radeon 7970 CFX. and i am currently at 13.4 version in windows 8 64 bit. But i am unable to install any installation packages released after 13.4 like the 13.10 beta 3 and 13.9 WHQL. I am getting an error message displaying installation package failure. I tried uninstalling the drivers and reinstalling the drivers again, but of no use. I am stuck at 13.4. Please help me