Moved FCP library to external drive - Media no longer appears in library
I moved a FCP library and consolidated all media files on an external hard drive. The timeline looks the same as when the library was on the computer hard drive but it is now all black. The names of the media files still appear in the timeline, and the start, end and duration info for the files is all correct in the side menu.
The missing media does not appear red. They are just empty black spaces.
When I click on an individual file in the timeline, the side menu 'Reveal In Finder' button does nothing.
I tried 'Relink Files' but nothing appears in either Original or Proxy.
How do I get the Library to find these files?
Thanks!
P.S. This is my first time using FCP.