I'm a big fan of Ccleaner, but this is pretty poor. I tested all my programmes after installing Windows 10 (around 30), and all worked a charm - not a single issue. But, like others, my pc crashed when I ran Ccleaner 5.08. (64 bit)
BTW. it performed a registry clean successfully. Seems to be cleaning that's problematic - emptying recycle bin when crash occurred.