Final Cut Pro and Final Cut Express: Not Compatible With NetInfo Login
Installing, updating, or using Final Cut Pro or Final Cut Express while logged in to Mac OS X as a NetInfo user may cause issues. You must be logged in as a local user.
Symptom
You cannot install or update the application.
An alert box with a message such as "File Error: Unknown Folder" or "Insufficient access privileges" appears.
Solution
Log in as a local user instead of as a NetInfo user.