CORRUPTED FILE ??? Blanks in Timeline, Export errors, Glitchy playback, Green Blocks

Whenever the application crashes you should trash the settings. Hold ⌥ ⌘ as you double click the library you want to open to launch the application. A dialog appears asking you if you want to Delete Preferences. If you don't do this while double-clicking your library, just opening the application, it will open a default Untitled  library.  

In FCP in library properties check the storage location of the cache. It’s probably in the library. Change the location to same location as the library. The cache will appear with the same name as the library, immediately adjacent to it. Once this is completely. You can quit the library and throw the cache bundle into the trash. When you reopen the library the cache will be rebuilt including creating new filmstrips for the clips. Give it some time to do this, a couple of minutes should get it started. The application with generate new filmstrips and waveforms as you open elements in the application.

See the cache to the same location as the library. Not to In Library. Set it to the Elite Mini Drive or whatever folder the library is in. That will move the cache to that location. You can then quit the application and trash the cache. When you reopen the library the cache files will be deleted. Make sure your FCP settings have background rendering switched off. Leave background rendering off.

The first image is inside the multicam clip editor. Two of the files only seem to have audio.

In the second image the angle viewer has a clip without video select, which is why there is no video in the Viewer.

Do these clips work correctly in the Browser?

They’re not called Preferences any longer. To match the system language, which has been adopted from iOS, they’re now called Settings. Yes, use the Delete button.

In FCP select the library in the Browser pane. The library properties will appear in the Inspector. You should see a modify button that lets you make changes to the default settings, formerly preferences.

You have a project selected not the library. It will look like this:

To smooth out your FCP learning curve, here are a couple highly recommended free tutorials that will prevent many hours of frustration and head-scratching.

Steve at Ripple Training’s 60 minute FCP tutorial overview https://www.youtube.com/watch?v=HqUP7Zgeuck

Final Cut Bro getting started  https://youtu.be/L3bZ-ETKZ8U

I must be doing something wrong.

At first, there are many things that no one knows. Same goes for the answerers here. All you have to do is accumulate knowledge.🦉👍

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