I just exchanged my controller on the 12DEC2019 and took my MCX8000 on a gig 13DEC2019 and the right display screen locked up on me during the party. The controller has less than 12 hours use on it and it froze up. I needed to restart Serato DJ Pro as well as the controller. I hope this was an isolated case and that it will not happen again. This is my second controller in 2 months.