RB Crashes When Loading Track with XDJ 1000

Dear beautiful people,

the title says it all. Everytime I try to load a track on the screen of my XDJ 1000 (mk1) rekorbox crashes. I can see and scroll through the library playlists, but after hitting the load knob on the XDJ, Rekordbox shuts down after couple of seconds.

System: Win 10

RB 6.02, but the problem exists since RB 6 and I am using the export-mode

XDJ Firmware 1.13

Connection via LAN - Cables and a switch (XDJs connected to the switch with LAN-Cables and a cable from the switch to the computer)

Do you know this issue? How can this be resolved?

Thank you in advance

Jo