Hello,
I just downloaded the latest free version of CCleaner-64 and it failed to install on Vista Home Premium. I haven't tried on Window7 yet, but I will let you know. The install fails about half way through (Abort, Retry, & Ignore are given as options)
Version 4.11 is still up an running with no problem.
Has anyone else reported the problem? If your working on this, I'll check back. I'd be glad to provide any info that you may require.
Thanks...