I've used the beta version of the 4 layer version last week with two servers and 2 DL1's and a fixed projector.

I've discovered no problems that need to be fixed. One server however could not been seen via Ethernet on the other server, although commands like full screen, quick scan etc did work.

The 6 layer version is a nice help to program a multiple server show on one server, thanks for that. I even think that the 6 and/or 8 layer version might work fine on a laptop as preview for the servers running two outputs en being near the projectors and not on the FOH.