10.8 Playfield on wrong screen

[xhire96]

So I tried some tables that used 10.8 and at first they worked fine, but shortly later the playfield moved to my fulldmd with the dmd overlaid on top of it. I just cannot figure out how to get the playfield back on the main monitor. 

[Tikimaster]

open programm, open preferences video/grafic - upper left side.. Change the display nr.

[Norm7]

if you're using a TV as a playfield, try powering on that before your pc.  That helped with my 3 monitors swapping out unexpectedly.