Rekordbox 6 usb export causes XDJ to freeze

Hey all!

I have upgraded from Rekordbox 5 to Rekordbox 6 and synced my usb drive with the v6. Since then, I am no longer able to use this usb drive as plugging it into either of my XDJ 1000 MK1 causes the player to freeze while reading the usb drive...

Is this a known issue? Any fix so I can reliably export my v6 library so I can use it with my players?

Thanks!