I uninstalled version 4.18.4844, d/l'd a fresh copy, then re-installed it: No go.
Fully uninstalling using specialized software to remove any trace of CCleaner and Piriform from the registry, then re-installing: Still no joy.
Thanks to FileHippo, you can still get CCleaner 4.17.4808: http://www.filehippo.com/download_ccleaner/58488/
I was never too keen on this monitoring feature anyway.
Please close this thread. Thank you