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Sometimes deleting old preference panes that are incompatible or other things can help, but I don't know exactly what

All I know is a clean install should get you fixed.
If you're interesting in doing that, make sure you backup in TM and on an external backup + extra's of important files.

Or you could wait and see if anyone posts anything about deleting preference panes or something that helps :p

Kind Regards
 
i have got that before!! i was lucky enough to show that to an apple service technician, he was like "that's the first time i encounter this".. :p
 
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