Final Cut Express 3.5 and earlier not supported on Mac OS X 10.5 Leopard

Issue or symptom

Final Cut Express version 3.5 and earlier are not supported on Mac OS X 10.5 Leopard.

Solution

Final Cut Express 3.5.1 and later versions are supported on Mac OS X 10.5 Leopard. Use Software Update to ensure you have the latest updates.