Path to FCPX share settings?

I am looking for where FCPX does store share settings. As the custom share settings don't appear, when I start FCPX with another user on the same machine, I recon they are kept in the user/library. I have deleted FCPX's preferences in user/library/Application support, but the settings are still there in the app.

They can't be in the application bundle itself, because I have deleted the app and reinstalled it — prefs are still there.

FCPX also does not use the share settings location compressor uses to store it's settings. I know that, because share settings don't update in FCPX, when I change them in compressor.

Can someone tell where those share settings are kept by FCPX?

The custom share destinations for FCPX are stored in user>Library>Application Support>Compressor>Settings folder.

If you have re-installed FCPX for a new User these Compressor custom settings will not automatically appear in your FCPX Destinations list. You can add them back via the Share menu > click Add Destination > double-click Compressor Settings in the list. This will open the Custom folder of your Compressor presets. Select any custom setting you wish, click OK and the Compressor preset(s) will be added as a new custom Destination in the FCPX Share menu.

If this does not work you will have to completely uninstall Compressor and re-install it for the new User you have created.

!!! Before uninstalling Compressor make a backup of all your custom Compressor presets in the Settings folder.

Uninstall Compressor using AppDelete, AppZapper or any other tool that deletes the app and all associated files. Then re-install Compressor 4 for the new User and see if everything works OK now.

FYI, that location only stores custom Compressor settings created inside of Compressor, not FCP X custom export (Destination or Share) settings created inside of FCP X. You can't get to the FCP X created custom export settings anywhere, from what I know.

Correct, Ben, but I think the OP specifically asked how to restore the custom export settings he created in Compressor ("share settings don't update in FCPX, when I change them in compressor"). Those settings are found in user>Library>Application Support>Compressor>Settings folder and you can access them from within FCPX by clicking the Compressor settings icon in the Destinations window.

FYI the proprietary FCPX Destinations are pieces of code stored inside an Executable File (CoreMediaIO) that can be found in the CoreMediaIO.framework folder in FCPX>Frameworks. These files should not be tampered with by us, mere mortals

When you customize any of the proprietary FCPX Destinations in the Destinations GUI ("DVD", "Image Sequence", "Export File"...) and/or you add customized settings as new Destinations to your Destinations window these User Destinations are stored in user/Library/Preferences/UserDestinations.plist