There are few times I can state fact. Norton 360-the new trial is not compatible with CCleaner at all. CCleaner is installed on my Dell laptop, Surface, HP laptop and HP PC and all four result in the CCleaner Crash pop-up when a clean is attempted. Also does not allow the CCleaner install if you try a re-install. I should not have tried the new Norton 360 because now it auto installs each time I Downgrade back to the previous version of Norton. Just a heads up- for now I am stuck or using another cleaner utility. Let me know if anybody else has this conflict or I hope I am missing something.