Follow the recommendations below in the order in which they're listed until you've isolated or fixed your issue. Before proceeding, make sure that you back up your Final Cut Pro X libraries, media and the Final Cut Pro X application.
1. Restart your Mac
Restarting your computer resets Final Cut Pro X-related system resources. To restart your Mac, choose Apple menu () > Restart, then reopen Final Cut Pro X and try to reproduce your issue.
2. Disconnect external devices
An incompatible or malfunctioning external device can sometimes cause issues with Final Cut Pro X. To test external devices:
- Shut down your Mac.
- Disconnect all external devices other than your keyboard and mouse.
- Reset NVRAM. You only need to do this the first time that you disconnect external devices.
- Open Final Cut Pro and attempt to reproduce your issue. If your issue no longer occurs, reconnect devices one at a time until you can reproduce your issue. Make sure that you restart your Mac after reconnecting a device, if the device requires it.
If the issue only occurs with a certain device connected, you may need to update or service the device. Contact the manufacturer for support.
3. Check Final Cut Pro X documentation
4. Check system requirements
Make sure that your Mac meets Final Cut Pro X system requirements.
5. Update Final Cut Pro X
Before you update, back up your existing libraries and your current copy of the Final Cut Pro application. This allows you return to the previous state that your files and the application were in if updating does not address the issue.
To make sure you're using the latest version of Final Cut Pro X, choose Apple menu () > App Store, then click Updates in the toolbar. If a Final Cut Pro update is available, you can click the Update button to download and install it.
6. Verify installation of Pro Video Formats
7. Check media and device compatibility
Make sure you're using a compatible media format, device and external storage device format. Contact the manufacturer of the device(s) for support. If a software update for the device is available, follow the manufacturer's instructions to update firmware for devices like cameras and external storage devices, or to update drivers for devices like interfaces.
8. Check software compatibility
If you're using a plug-in or other software not made by Apple with Final Cut Pro, make sure that it's compatible with your version of Final Cut Pro. Contact the manufacturer for support. If an update is available, follow the manufacturer's instructions to update the software.
9. Try using another user account
Open Final Cut Pro X in another user account on your Mac. Logging in as another user can help you figure out if unexpected behaviour is related to a specific user's settings or files.
10. Test with a new library and project
Create a new library and project, and try to reproduce the issue using known-good media, which is media that you've used successfully in other projects. If you can't reproduce the issue using known-good media, the issue may be related to the media in the affected project. Obtain new copies of the media from the original source.
If you don't have known-good media available, you can create some using a placeholder and a sound effect from Final Cut Pro X Additional Content.
11. Reset Final Cut Pro X preferences
Resetting preferences doesn't affect your libraries, projects or media. However, any custom preference settings will be reset to their default settings.
Before resetting preferences, choose Final Cut Pro > Preferences and note any specific settings you've made. Learn more about Final Cut Pro preferences.
To reset preferences in Final Cut Pro X 10.3 or later:
- Quit Final Cut Pro.
- Hold down the Command and Option keys, then open Final Cut Pro.
- Click Delete Preferences.
- Try to reproduce the issue you were experiencing. If the issue no longer occurs, open Final Cut Pro preferences and reapply your custom settings.
12. Remove and reinstall Final Cut Pro X
To remove and reinstall Final Cut Pro:
- In the Finder, choose Go > Applications.
- Locate Final Cut Pro and drag it to the Trash.
- Reinstall Final Cut Pro X from the App Store or restore it from a back-up. When restoring a copy of the Final Cut Pro application from a back-up, you can either drag it from its storage location to your Applications folder or restore Final Cut Pro from Time Machine back-ups.