CleanMyMac has modified OS X behavior. Can't recover ...
Following update to OS X 10.10.2 in January, I asked CleanMyMac to suppress language files I don't need plus any files proposed as standard by CleanMyMac.
Right after that my MacBook Air showed a modified behavior in Safari and stopped replying to the "about this Mac" and App Store commands in Apple menu.
I tried restoring the system from a recent Time Machine folder without success.
Anything I could do ?
MacBook Air, OS X Yosemite (10.10.2)