[Problème] bugs effects final cut x.0.8 et 0.9

Hi have a very big problem with my projects…with Final CutX 0.8 and 0.9 and Mountain Lion
when I open a projet or I make a new projet the effects doesn’t working proprely.
For exemple when the mouse go though many effects give black image, also the parameter of the title when I close the project and I open again are completely differents. I have the same version on my Mac Book Pro , and It’s work.
I trashed the preference, (2 of them , I can’t find com.apple.FinalCut.UserDestinations.plist )
But nothing the problem is there, I found some other people having the same problem bur not answer.
So I made a clone of hard disk, , then I reinstall the system Mountain Lion, I import in the new system all the old data ( also the programs, and the problem is there!) If I work with a extern HD on FCP er montain Lion everything is OK with the same project that make problem with the internal HD.
Maybe I do not have to copy all my data in the new installation system???
Thanks Ago