I have the following problem. When I choose the option "scan for (registry) problems" (I use the Dutch version) in CCleaner, I often have some files who apparently can't be removed. These are always "unused extension files" with registry key HKCR\<filename>. I give some examples: "HKCR\CCListView.cItemGroup", "HKCR\IPodService.iPodManager", HKCR\.Sims2Skin and many others. I think these unused extension files may be removed, but I don't know how. When I open a specific problem in "regedit" and I want to delete it there, I always got the message that it cannot be removed or that not all values can be removed. Somebody has a solution for this problem? Thanks in advance.
