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Can't open Energy Saver or Desktop Preference Panes

1658 Views 4 Replies Latest reply: Dec 29, 2012 11:19 AM by kalkap RSS
s_w_i_t_t_e_r_s Level 1 Level 1 (0 points)
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Sep 16, 2012 2:54 PM

I recently downgraded from Mountain Lion to Lion. I erased my internal hard drive, installed Lion, updated to 10.7.4, and then migrated my user account data using the Migration Assistant.


I am unable to open the Energy Saver or Desktop & Screen Saver Preference Panes. I get an error message that says "Could not load Energy Saver preference pane."


I opened and this is the error message:


9/16/12 2:49:55.975 PM System Preferences: [NSPrefPaneBundle instantiatePrefPaneObject] (/System/Library/PreferencePanes/EnergySaver.prefPane): principalClass is nil.


And for Desktop Pane:


9/16/12 2:52:58.706 PM System Preferences: [NSPrefPaneBundle instantiatePrefPaneObject] (/System/Library/PreferencePanes/DesktopScreenEffectsPref.prefPane): principalClass is nil.

9/16/12 2:53:05.221 PM talagent: PersistentUI: CSBackupSetItemExcluded() failed with OSStatus -61


I have no idea what to make of this! Can anyone help?


I have already reinstalled the 10.7.4 Combo Update and deleted the System Preferences preferences in my user account.

MacBook Pro, OS X Mountain Lion (10.8.1)


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