Playlist is not loading on my USB.

Did you export it properly? Is the USB or export database damaged?

I am finding the same problem and I don't have access to CDJ's at this time to check whether or not this is a problem. I won't find out until I am next djing. Can anybody help? Is there a particular way to export tracks so they are shown as the playlists are displayed as they are shown on my mac?

further to my previous message the tracks in he 'content' folder are displayed in folders by artist.

The Contents folder is not supposed to be "user-browsable," as it simply contains the media managed by the database.

I would first try reformatting the USB drives and export the playlists again from scratch. Be sure to format the drive properly to a file system supported by the CDJs / XDJs.