Hi Bodyguard and welcome to Piriform.
I've found by researching that this fault can be a reasonably common one when selecting that particular option.
But I've also found a post on an AMD forum where the cause could be CCleaner removing a registry entry, and the fix obviously is to add this reg entry to CCleaners "Exclude" list ... CCleaner\Options\Exclude\Add Registry.
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in using ccleaner to scan for registry isolates, a key appeared: c4.cccc.com, whose data is also the same. by "fixing" it, the problems surfaced. by adding the entry to the scan exclude list, the problems have not resurfaced for my machine.
LINK:
You don't say whether you fixed the problem, but if you have, look for a similar entry when you do a CCleaner "Issues" scan.
Hope that helps.