FCPX 10.3.4 crashes during File>Share>Master File. I have reinstalled FCPX, trashed preferences, trashed Libraries, created new Libraries with new clips, run Disk Utility, repaired permissions, restarted the computer, etc. Nothing is working and FCPX just keeps crashing on Share. Please advise! Many thanks! Here is the crash report if it helps: Process: Final Cut Pro [4596] Path: /Applications/Final Cut Pro.app/Contents/MacOS/Final Cut Pro Identifier: com.apple.FinalCut Version: 10.3.4 (303235) Build Info: ProEditor-30323005007000000~1 Code Type: X86-64 (Native) Parent Process: ??? [1] Responsible: Final Cut Pro [4596] User ID: 501 Date/Time: 2020-03-23 11:05:06.311 -0400 OS Version: Mac OS X 10.13.6 (17G65) Report Version: 12 Anonymous UUID: 3CF3EC37-947D-0AEC-3D73-0BF7154EEBDA Time Awake Since Boot: 4400 seconds System Integrity Protection: enabled Crashed Thread: 0 Dispatch queue: com.apple.main-thread Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x0000000000000000, 0x0000000000000000 Exception Note: EXC_CORPSE_NOTIFY Application Specific Information: Unexpected exception abort() called Ë∂flùˇ

Thanks for the suggestion! I followed your advice in Preferences/Destinations>Restore and it still crashed. I created a new Library, with new video and same thing happened. I then tried to take the same media and import to iMovie then Share as a "File". While the program didn't crash, this message appeared: Exporting "My Movie" has failed The operation couldn't be completed. (com.apple.Compressor.CompressorKit.ErrorDomain error -1.) Both FCPX and iMovie were both working and there were no crashes up until this week. Again, any advice and suggestions would be appreciated!

Joe and Iain.... Thanks for all your help and suggestions. I have even tried opening a new Library, new event and project and adding a 5 second video, then File>Share>Master File and the same thing happens. I will try the updates as well. Thanks again.

What a difference a day makes....I had recently updated the OS to 10.13.6. After trying every suggestion given me, I did a Time Machine Backup and restored my OS to 10.13.2. Restarted, opened up FCPX and NO crashes when exporting! I tried to solve this for a week! I hope that this helps anyone else with my configuration. Thanks again to all who helped!