I also had this problem, and it turned out to be a permissions problem in the registry. I used regestry editor to re-establish permissions for the affected keys with a different user account, and it solved the problem.
I have had this problem for the past several versions of CCleaner.
I scan for issues. It finds a bunch. I fix selected. I then rescan and find exactly the same long list of issues. Repeat process.
For some reason CCleaner is finding issues but not fixing them.
Scan for Issues......Issues
in CCleaner Bug Reporting
Posted
I also had this problem, and it turned out to be a permissions problem in the registry. I used regestry editor to re-establish permissions for the affected keys with a different user account, and it solved the problem.