Uninstall CCC and all ATI drivers and softwares.
Run DriverSweeper and check whether every ATI driver has been removed.
Reinstall the Latest CCC and drivers for your GPU after a reboot.
Check to see if problem is solved.
Also, the.NET program could be an issue.
First try the CCC remove and reinstall.
Then Try the .NET complete remove and reinstall if the earlier doesn't work.
If it still gives the same message, then , check for viruses and missing or corrupt system files.