My version 0f CCleaner (ccsetup 225)will not run with my Windows 7 OS. I can't open the program nor can I uninstall it. Do you have a solution for this problem? I downloaded the latest version but when I try to run it I get a message saying that Windows cannot verify then digital signature for this file.

Is yours a non English windows install?

If so there have been some reports of softwares (not just ccleaner) triggering the signing error when in fact they are digitally signed software.

If you right-click on the setup file and choose properties and then click the digital signature tab you should be able to see this.

Have you tried uninstalling in safe mode?