I have the same problem with this version. I'm running Windows 7 with SP 1. It was working fine yesterday, but I tried to update and it wouldn't complete the install. It stopped and said it couldn't finish. CCleaner was still working, but I started up this morning and the program was gone. Folder was there, but not the exe. Downloaded and reinstalled but it won't do a Scan, just analyze. The realtime cleaning of Chrome is working.