System preferences crashes at changing desktop picture
(My system MBP mid 2009) Yesterday I upgraded to Lion. All works fine. But when I try to change the Desktopwallpaper the System preferences crashes. I discovered this behavior only within my user account, the other account on my MBP works normally. Changing the screensaver works fine in both accounts as well. I have already deleted com.apple.desktop.plistfile. What else can I do?
Thanks.
René
MacBook Pro, Mac OS X (10.7)