You’re trying to access some of your details, and you can't see them in the Detail Manager, or you're unable to see one of more or your details in both the Detail Manager and the Detail Explorer. What's the deal? Your Detail Library may be set to the wrong location. Your office may have just migrated its server, and your details are still on the old machine. You may not have the proper permissions to access your Detail Library or the Land F/X project that includes the details.
See the links below for the troubleshooting steps to take if you can't locate your details within CAD.
Details Visible in Detail Manager but Not in Detail Explorer? Solution
Can't See Your Details At All from Within CAD? Solution