You may find a solution in this Gemini AI response. Its suggestions seem sensible to me.
This issue typically occurs when the Apple Creator Studio background daemon (responsible for validating your active subscription entitlement and downloading assets) runs into a local cache conflict, network block, or asset-manifest corruption.
Because you have both the legacy/standalone version and the Creator Studio subscription on your system, old application receipts or broken entitlement caches often prevent downloaded premium assets from linking correctly to your active subscription session.
Step 1: Remove Cached Receipt & Subscription Files
- Quit Final Cut Pro.
- Open Finder, press Shift + Command + G, and paste the following path:
- ~/Library/Caches/
- Locate and delete any folders named com.apple.FinalCut or com.apple.InAppStore.
- Press Shift + Command + G again and navigate to:
- ~/Library/Containers/
- Move the Final Cut Pro container folder to your Desktop as a temporary backup (Final Cut Pro will automatically regenerate a fresh, clean container when reopened).
Step 2: Clear Assets & Force-Recheck Subscription Entitlement
- Open App Store on your Mac.
- Sign out of your Apple Account from the bottom-left corner, wait 10 seconds, and sign back in.
- Open Final Cut Pro (ensure you launch the Creator Studio subscription build from your Applications folder, not an old standalone copy).
- Go to the top menu bar and select Final Cut Pro > Download Content Library.
- Check if the premium assets unlock and complete their installation without getting stuck.
Step 3: Check Firewall & Security Daemons
If the asset status shows "Downloaded" but remains grayed out or unusable, the background validation service (storekitd or Apple's licensing daemon) is likely being blocked from contacting Apple's entitlement servers.
- Go to System Settings > Network > Firewall.
- Ensure the firewall isn't blocking incoming or outgoing connections for Final Cut Pro or Apple services.
- Temporarily disable any third-party VPNs, network filter tools (such as Little Snitch or LuLu), or security software, then relaunch Final Cut Pro to test.
Step 4: Full App Store Reinstall of the Subscription Build
If the issue persists, the subscription build may be reading receipt tokens leftover from your standalone version:
- Drag Final Cut Pro from your Applications folder to the Trash (your project libraries will remain safe).
- Open App Store > Account (bottom-left).
- Redownload Final Cut Pro directly from your active Creator Studio / App Store Subscriptions section.
- Launch the freshly installed app and download the content library again.
