@MrA, @Jan_CCleaner, @TomK_CCleaner, @Dave_CCleaner,
It seems the incompatibility between CCleaner v6.32.0.11432 and the succeeding version and advapi32.dll v6.1.7600.16385 on Windows 7 SP1 64-bit computers is not going to be addressed, or not very soon, anyway.
I would like to thank each and every person who worked or works on this application and for making it available to an interested user like me.
My best wishes to all the staff and the community.