@Paul > This could be one of the bugs that was addressed in the most recent update:
- Fixed an issue where the browse screen would become slow or stop when the unit is used for several hours.
- Fixed an issue where the BACK button does not navigate to the browse screen
when editing a playlist in rekordbox while the unit is connected to rekordbox via the Pro DJ Link.
- Fixed a rare issue where playback from other media would not start, stop or be selected
when a large USB device (e.g. 20,000 tracks) is disconnected.
- Fixed an issue where the unit freezes when pressing the HOT CUE (REC/CALL) button for over 1 second during auto hot cue loading.
I'd also like to know what USB device you were using and if you had played that particular track before?