I have looked around the forums and seems many people have resolved and some hasn't.... My new iMac late 2012 which i just got a few days before Christmas is freezing the screensaver option i want to chang eit back to random pictures from iPhoto.
I've tried thethe followiing
- deleting com.apple.systemprefernces.plist
- restore it from my timemachine from 2months back
- replace my iPhoto library elsewhere and created a new one
none the above have never worked!
I know this could be related to a user settings because i created an new user and it works on there.