reg key exclusion problems

[frankblack]

I cannot add a registry key to the exclusion list because when I copy it from the registry editor and attempt to paste it into the exclusion list, the save option is not funtioning, only the cancel button will work. It is an 'open with' command that continues to show up after I clean the registry issues area. I cannot in fact add anything to the exclusion lists, because the "save' option never does function. I am running CCleaner on Win. Vista as administrator and am having no other problems.