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You're running a Hackintosh? The problem is that the script is intended for MBA only, as far as I understand. May be that's the problem....
Have you enabled x-org-edgers-ppa? Script seems to stop working after that. Anyway, I don't think you need to reinstall Ubuntu. Please attach...
Found a script to make Parallels Tools working with Ubuntu installed in Boot Camp partition. Just run the script after Parallels Tools...