Hello everybody, I am new in the Forum. Forgive my English, but is my second language. I hope I am posting this thread in the right place, If not, please forgive me. I am having problem loading some System Preferences Apps. They are actually three, "Desktop & Screen Saver", "Spotlight" and "Energy Saver". I tried fixing permissions, reinstalling system preferences using an app called Pacifist. I tried reinstalling OS X Lion, but everything seems to fail. The only thing that didn't fail was a clean reinstall of the OS, but I don' want to have to reinstall everything again. I have everything backed up in Time Machine, So when I reinstalled the OS I transferred all my DOCS and Apps from time machine. I am not good with terminal but if someone could guide me in right direction to fix this I will appreciate it. Here is a log from console with the errors and what I think it seems to be wrong. Please help me out to fix this. Thank you Desktop & Screen Saver 3/4/12 7:28:41.670 PM System Preferences: Error loading /System/Library/PreferencePanes/DesktopScreenEffectsPref.prefPane/Contents/MacOS/DesktopScreenEffectsPref: dlopen(/System/Library/PreferencePanes/DesktopScreenEffectsPref.prefPane/Contents/MacOS/DesktopScreenEffectsPref, 265): Symbol not found: _OBJC_CLASS_$_NSObject Referenced from: /System/Library/PrivateFrameworks/iLifeMediaBrowser.framework/Versions/A/iLifeMediaBrowser Expected in: /usr/lib/libobjc.A.dylib in /System/Library/PrivateFrameworks/iLifeMediaBrowser.framework/Versions/A/iLifeMediaBrowser Spotlight 3/4/12 7:30:09.217 PM System Preferences: Error loading /System/Library/PreferencePanes/Spotlight.prefPane/Contents/MacOS/Spotlight: dlopen(/System/Library/PreferencePanes/Spotlight.prefPane/Contents/MacOS/Spotlight, 265): Symbol not found: _OBJC_CLASS_$_NSObject Referenced from: /System/Library/PrivateFrameworks/iLifeMediaBrowser.framework/Versions/A/iLifeMediaBrowser Expected in: /usr/lib/libobjc.A.dylib in /System/Library/PrivateFrameworks/iLifeMediaBrowser.framework/Versions/A/iLifeMediaBrowser Energy Saver 3/4/12 7:31:06.506 PM System Preferences: [NSPrefPaneBundle instantiatePrefPaneObject] (/System/Library/PreferencePanes/EnergySaver.prefPane): principalClass is nil.