Offizieller Kommentar
@Lil Jam > Sorry to hear about that, but unfortunately the export database is just that; an export database, and can't be recovered into a working collection database. The best you can do is restore the music files from the USB drive and rebuild all the hot cues, etc. from scratch.
This is a painful lesson, but it is recommended that you keep at LEAST one backup or duplicate of your music and database. Personally, I have about 5 local and offline copies (including one stored in the cloud, updated in realtime via BackBlaze).