I tried the recent trick of uninstalling the older version, and then looked to delete the files in the CCleaner folder....
But no program folder was to be found after the uninstall this time. Tried the Update file again and I still got the same Abort, etc message.
So, I restored my hard drive to where it was before the uninstall. One more time I tried installing the Update and got the same " Abort, Retry, Ignore."
This time... I figured..."What the hey!? I'll use restore if it mesess up!" ... So I clicked Ignore.
Guess what? It installed without a problem.