[CCleaner no longer cleaning cache on Android 6.0 Marshmallow - after years of doing so.]

Yep. I have exactly the same problem. I have Marshmallow v 6.0.1 on my Samsung Galaxy S5. I also have used CCleaner for Android for several years without problems until this Android version.

Anybody got any ideas?

[Invisible programme]

Many thanks, hazelnut. You are correct and the NIK collection is not compatible with the ACDSee program. An earlier version of the collection allowed independent use of the different elements of the collection but not the complete collection version. I should have checked before installing. It's gone now. Thanks again.

[Invisible programme]

No, I do not. I use ACDSee Ultimate 9. Thanks for your comment. I will see if my processing program will operate with NIK as plug-ins.

[Invisible programme]

My PC runs Windows 7 64-bit. Today I downloaded and installed the Google NIK Collection (a group of photo-processing utilities). CCleaner Cloud can see it and lists it among installed software. However, I cannot find it on the computer. It's listed in the programs that show if I go to Control Panel and click on 'Uninstall a Program'. If I open the programs folder it is not there; neither can 'search' find it. It doesn't show in the programs when I press the start button.

 

It hard to start using a program that you can't find! Can anyone explain this?