Can't change the wallpaper on my mbp 13".
I can't change the wallpaper on my mbp 13". Neither via "right click", nor via "preferences". When I try to change it all I get is the beachball and then it seems as "preferences" crashes. At least I get no response from it and have to "kill the programm". Does anybody have an idea why?
Thanks in advance! 🙂
MacBook Pro (13-inch Early 2011), OS X Mountain Lion (10.8.2)