Final Cut Pro not working

Where is “updates”?

10.6.1 and my large library still crashes. 1 large project could "not be repaired".

That project was working before 10.6.

Deleting preferences didn't do anything for me. It's still very slow exporting and importing.

Where is the 10.6.2 update? I'm waiting to use my large library again, Apple!

..... moreover, so of users who have installed the operating system from scratch, but without results.

No idea what that means. Installing the system is part of it. What do you after is what counts. What you migrate. What you install.

Here you are, I've runned EtreCheckPro as "No problem - just checking", is it ok? Thanks so much!

☝🏼🤓 I’m having the same issue here with latest Monterey just upgraded and latest FCP just installed 🙄🤦🏻‍♂️

Thanks Tom, I don't "assume" everybody is having the same problem, but I know if I am there will be many more, I just think telling someone to delete their preferences is a bit silly! Then getting aggressive when challenged on it is not a positive reaction to a known issue. My projects open but take a long time and then the only way to close the project is to force quite. So no deleting preferences didn't work and challenging me on it only brings more people forward.

I can confirm it's some issue between 10.6 and Monterey. It appears to be related to loading the media when the library is opened.

Our assistant editor has a basic 13 inch Intel MBP with Big Sur and we wasn't having any troubles loading libraries and events. I have a souped up 16 inch i9 MBP with Monterey and had the problem on the same library. Tried on my wife's M1 MBP with Monterey and her computer exhibited the same problem as mine (though it loaded faster than my 16 inch... surprise!)

I did a little digging and found that when the library loads, it fires off a ton of errors in the console. For those with the problem, try this:

1. Quit FCP
2. Open Console
3. Click "Start Streaming"
4. Open FCP and the library giving you troubles
5. Look in Console and see if you have the following error repeated over and over (search for "Final Cut Pro" to filter on console log items related to FCP):

fault	08:32:52.342498-0600	Final Cut Pro	*** -[NSKeyedUnarchiver validateAllowedClass:forKey:]: NSSecureCoding allowed classes list contains [NSObject class], which bypasses security by allowing any Objective-C class to be implicitly decoded. Consider reducing the scope of allowed classes during decoding by listing only the classes you expect to decode, or a more specific base class than NSObject. This will become an error in the future. Allowed class list: {(
    "'FFXMLVideoReservedData' (0x104bdb4b8) [/Applications/Final Cut Pro.app/Contents/Frameworks/Interchange.framework]",
    "'NSString' (0x7ff8477c4a10) [/System/Library/Frameworks/Foundation.framework]",
    "'NSDictionary' (0x7ff84779aab0) [/System/Library/Frameworks/CoreFoundation.framework]",
    "'NSData' (0x7ff84779aa38) [/System/Library/Frameworks/CoreFoundation.framework]",
    "'PCMatrix44Double' (0x101d7c6f0) [/Applications/Final Cut Pro.app/Contents/Frameworks/ProCore.framework]",
    "'_REDClipMD5Wrapper' (0x10ba6f490) [/Applications/Final Cut Pro.app/Contents/Frameworks/Flexo.framework]",
    "'FFNamingPreset' (0x10ba541b8) [/Applications/Final Cut Pro.app/Contents/Frameworks/Flexo.framework]",
    "'FFResource' (0x10ba78f90) [/Applications/Final Cut Pro.app/Contents/Frameworks/Flexo.framework]",
    "'AutoEncodeDecodeObject' (0x10ba6e680) [/Applications/Final Cut Pro.app/Contents/Frameworks/Flexo.framework]",
    "'NSArray' (0x7ff84779a970) [/System/Library/Frameworks/CoreFoundation.framework]",
    "'FFMediaSourceDescription' (0x10ba64bd0) [/Applications/Final Cut Pro.app/Contents/Frameworks/Flexo.framework]",
    "'FFXMLTransitionReservedData' (0x104bf1468) [/Applications/Final Cut Pro.app/Contents/Frameworks/Interchange.framework]",
    "'FFFaceDetectionInfo' (0x10ba5c3e0) [/Applications/Final Cut Pro.app/Contents/Frameworks/Flexo.framework]",
    "'FFMapLocationChannelValue' (0x10ba68730) [/Applications/Final Cut Pro.app/Contents/Frameworks/Flexo.framework]",
    "'DSObject' (0x1022db3f0) [/Applications/Final Cut Pro.app/Contents/Frameworks/Flexo.framework/Versions/A/Frameworks/D<decode: missing data>



I tried creating a brand new library to see if the problem happens on with libraries created in 10.6 but I need to try a few more things to see. My guess is the next Monterey release will fix it or perhaps we'll get 10.6.1 soon.

I should resist upgrading to the new shiny, but sometimes I can't help myself! LOL!

Did you make a backup of the library prior to updating it for FCP 10.6? Send that to your collaborator and both of you rollback to FCP 10.5.4 from TimeMachine backups while waiting for 10.6.x. Many posts here about people running into very slow behavior with 10.6.

hi upgraded to Monterey and I am also getting the spinning Beachball on FCP 10.6

It will open up but it takes about 3 to 4 minutes to open.

If you can revert to a previous version.

If you have a copy of the previous version from Time Machine or another system backup. you can open that. You could then open a backup library from Backups or from again from system backups.

If you’re using 10.6, the issues are in the application not in the OS.

There are specific instances to reset prefs. Deleting them randomly is pointless.