I’m trying to install Unity on my school Macbook but I’m receiving the error [20886-screen+shot+2014-01-20+at+2.58.50+pm.png|20886]
Try;
Open Disk Utilities on your MAC.
Try to repair your disk permission.
Try holding the option key down when opening unity. This will allow you to choose which project to open instead of the last opened project which may not be there.,Try opening Unity while holding the option key down. It may be trying to open a project that doesn’t exist anymore since it opens the last opened project.