David as i am not the author of the software it is difficult to be specific
as to the cause of the problem. I certainly have never had any problems with
the software. One thing i should ask, though, is do you have the .net
framework installed on your pc. If i recall correctly without .net framework
cleancache either doesn't work or doesn't work correctly.
Also i did get an email from a young lady who said she had installed it and
it didn't work. However after i suggested removing cleancache via add/remove
in control panel and then reinstalling it, she emailed me back and said it
was now working fine.