Thanks Ewanl30, tried that but it made no difference, maybe I should explain more. We are using just a 6 second .wmv file which starts from black 1 sec, 4 secs video and then another 1 sec black. The screen (this time properly called !!) is defined as Video Wall type with one full screen video frame (only thing allowed) with the video set to repeat. The purple flash is maybe 1 just 1 frame duration between the repeats. Using your suggestion I applied green to the screen background and indeed this is shown when the schedule is newly published but from then on, even between repeats, it is not seen, just the dark purple flash. I guess you where refering more to a list of fotos with transitions where the background would be seen. Ia am going to give that a try to confirm your comment.