adding new music to XDJ-R1 USB library from another computer

Hi there,

I was having problems with my current computer hard drive wise that would've put me in danger of losing all of my music i ever downloaded and organized on iTunes and Rekordbox.  (version was 3.0.1 as of September) As soon as i recently purchased the XDJ-R1, my computer started acting up with physical damage on the hard drive(?)

So i tried a different computer and installed Rekordbox 3.1 tonight, put some new music on there, and put them into playlists that were already in the flash drive with 1400+ songs i already have.  The export was successful, but when it tried to create the XDJ-R1 library, but every time it got to 26%, it failed to create the library.