I know Windows 7 Beta released officially yesterday to 2.5 million, I'm one of them.
I installed latest version of CCleaner today after installing W7 (64 bit) Beta today.
It seems CCleaner doesn't work at all, the actual functions do nothing basically.
- fix registry, always shows up 148 problems after fixing all if I rescan.
- settings area, choose to show option to run and open CCleaner in recycle bin, it never saves the options
Cleaning cache (run CCleaner main feature) seems to work otherwise