FCPX broke after upgrade to Big Sur. Will not Share Master File. EtreCheck seemed to find other problems, too.

FCPX was working fine on Catalina. I upgraded to Big Sur and now it's a mess. It is incredibly slow if it works at all. The beach ball spins and spins and spins when “Preparing media to share.” Sometimes the only way out is to force quit.  Force quit says the application isn't responding. After a force quit, FCPX app will not often open again from the desktop without restarting computer. Sometimes the beach ball spins and spins if I do anything within the timeline. I have found that if I wait a very unusual amount of time that sometimes the task will complete but sometimes, I just have to force quit. It will not save a master file. I keep getting a message that it failed to save.  I have used FCPX for about a year on previous OS and had no such problems.  I tired deleting the plist file. Didn't help. Tried re-installing FCPX. Didn't help. Nothing has changed about my hardware or hard drives.  iMac (Retina 4K, 21.5-inch, 2019). Processor: 3 GHz 6-Core Intel Core i5. Memory: 16 GB 2667 MHz DDR4. Startup disk; Macintosh HD; Graphics. Mac OS Big Sur version 11.1. Using FCPX 10.5.1. When I looked at EtreCheck report, it says, “security updates disabled.” I have internet through Comcast Xfinity and had been using Norton from them but as of Jan 1st, they said they are using different security software and to just log on and turn it on, which I did. Then I deleted Norton but the FCPX problem started before that. I did turn the firewall on now. I’m not sure if I should trust the Comcast Xfinity security or not??? The Etrecheck says I have no virus protection? That would be since January 1st when I got the message from Comcast. The EtreCheck also says performance is “poor.” It says I have a failing hard drive but I can’t tell from the report which one it is? My previous Time Machine disk failed around 12/6. I can’t remember if that was before or after I upgraded to Big Sur. Disk utilities could not fix it and it that hard drive won’t mount. I have since replaced it with another. Another hard drive I was using to save to for FCPX files lost it’s connection and I got the message about not disconnecting hard drives while in use but I had not disconnected it at all. That hard drive is new in the last week or two and has mounted again at this point.  


iMac 21.5″, 11.1

Posted on Jan 5, 2021 6:16 PM

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Posted on Jan 10, 2021 10:23 AM

I was successfully able to install Catalina on an external SSD drive and FCPX works fine again. If anybody else is having similar problems, just want you to know that Big Sur is the problem. I appreciate the help and suggestions from others. The Etracheck reports were interesting and I did delete some unnecessary files but none of those things were the issue and deleting those files made no difference. The fact is that you can spend a lot of time spinning your wheels, trying to track down some mysterious culprit but my guess is that most people reading this can cut to the chase if you are using FCPX 10.5.1. on Mac OS Big Sur version 11.1 and save yourself a lot of time and frustration by either installing Catalina on an external drive or replacing Big Sur on your main drive. I found YouTube videos helpful in the process. I downloaded Catalina installer onto an SD card and then installed on an SSD drive that was formatted as APFS. I wasted a lot of time trying to install on a Mac OS Extended (journaled) drive but that would not work. Good luck!

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58 replies

Feb 16, 2021 11:49 AM in response to khaprichkov

khaprichkov wrote:

What can you say about this problem https://www.fcp.co/forum/4-final-cut-pro-x-fcpx/34527-playback-in-browser-randomly-not-working After updating to Big Sur and FCP 10.15.1 playback in Browser viewer stoped work. First 2 min maybe can work, but afteri se only black screen.........


I can say that it is an issue affecting some users (me included), but it is a different problem from the current thread.

You can find a few threads about it, or you can start your own.

Mar 15, 2021 4:14 PM in response to sylvanr

Have the same problem. Final Cut ran perfectly on Catalina, upgraded to Big Sur. Now all I seeare "Beach Balls" and that is the end of my editing. Quit the edit and try again...and again...with the same result.


I am not a developer our software coder. Why can't Apple make an upgrade that does not screw up their own applications? I delayed upgrading to allow allow to work out any bugs, but alas, Apple is too busy making money instead of software that works reliably.


I should not have to downgrade back to Catalina or buy an SSD to make Final Cut Pro work!

Mar 15, 2021 5:43 PM in response to VALDIRENDERS

Big Sur is stable and running well on my system.

I believe it might be a bit faster than the previous OS.

Regressing to Catalina is certainly an option for you, but looking long term, it would be better to address and correct your underlying problem that is preventing you from running FCP on Big Sur.

EtreCheck is a good way to get a useful system health report.


https://etrecheck.com


MtD

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FCPX broke after upgrade to Big Sur. Will not Share Master File. EtreCheck seemed to find other problems, too.

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