i have ati graphics driver version12.3. i downloaded the 12.4 version and removed the old 12.3 through control panel and restarted my pc. now installed the12.4 version installation completed successfully (I also checked the log everything was success including display driver). but still in my vision engine control center it is showing 12.3 not 12.4. same as in case of gpuz
http://gpuz.techpowerup.com/12/05/17/6ut.png
http://gpuz.techpowerup.com/12/05/17/6ut.png