I joined this forum to explore this new problem with ccleaner adding avast to its latest updates.
I have been using "CCleaner - Portable" found here (https://www.ccleaner.com/ccleaner/builds) if you want to download it on ccleaner.com.
I find that it uses less ram and space on my disk, plus does not clutter up my dll registry. When it is time to update I come over to the link above and get the latest portable version and install it.
I found out about this new problem with ccleaner on another forum that stays on top of the latest software updates and suggests to its members to