Importing RB

Hi there…having trouble importing from RB , followed procedures as per instruction, but end up with all tracks showing in RED after Updating Library. About 1.6k tracks. Obviously, I cant do anything with them after that… These tracks, playlists are coming from RB, but not mine…and it is on a PC, where as I am using MacBook for EP. Not sure how to sort this out. Reason being would like a DJ Friend who uses RB to “guest” on my Prime 4 on occasions…hoping she can just “plug in” and play her set…??