Double DN-HC4500 screen trouble

[emaceratus]

Hi,

I’ve run into some trouble when hooking op 2 dn-hc4500 units to Traktor Pro 2 on the same mac.

Traktor recognises both units as seperate controllers and allows mapping as separate controllers, even with output.
But I can’t get the screens of the second unit to display anything when mapped to deck C and D.

Both units have been set to seperate midi channels and a different unit number.

Is Traktor limited to only 2 displays ?

[emaceratus]

Nevermind the displays...

My system crashes after aprox 15 seconds of tunes when both units are connected.