No, what I can see is this window and nothnig else.
I use CCleaner for a few years (all versions) but I have never had this kind of bug. Month ago I`ve installed polish program called Odkurzacz and after that CCleaner does not work.
I can scan and fix registry, analyze files but when I try to delete (Run CCleaner), the error message appears and CCleaner crashes.
When I scan my disk (using Run CCleaner) and in the same moment use Firefox, this message does not appear.