Google Translated the above:
"usb stop top nice to hear because I had done wrong in the past and just remove the USB without logging out. in the booklet of the xdj rx there is something that the management data of the device can be erased and the usb can be damaged. I also have my xdj rx once in a while that it freezes when you're spinning but I think it's because I have a usb that has not been analyzed by rekordbox and when I run with a USB that has been pulled by rekordbox that I do not have any problems with that I thought in the first instance that it would be because I did not report the USB stick properly. mvg ryan"
Not sure if you are asking some advice or trying to figure out why your RX is freezing, but a good start would be to always eject your Flashdrives, if they are connected to your laptop or the RX.