Hello, at the end of the installation of AMD Catalyst 11.4 i got a warning about OpenCL drivers not being able to be installed. I went into the 11-4_vista64_win7_64_dd_ccc_ocl\Packages\Apps\OpenCL64 folder and launched OpenCL.msi. It is just saying "another version is already installed, unable to preceed." but the fact is there is NoT another version installed. I checked the control panel and removed ALL the ati software, reboot, use Driver Sweeper, reboot install the drivers and i'm still having the same problem. Anyone knows how to fix it? Thanks.