Thank you for your prompt reply, Sheik Andavari.
I went to the filehippo (an unclean beast!) and downloaded v. 1.41.544, and performed a clean install. After rebuilding my 'kept cookie' trove, all is well again.
The CCleaner is restored, the goat was succulent, several tons of iron were pumped and I'm feeling stoked! I think I shall gather my posse and hit the dunes for a night of fun. Perhaps some pyramid tipping!