I have 3 monitors attached to my mac, two via DVI and one via HDMI. Using mercury transmit to try and play video out to the HDMI monitor does not work. If you select monitor 1 or 2 it is fine, third one as shown just does not display.
Any ideas? Is it limited to 2 monitor outputs?
2010 Mac Pro
Nvidia GTX 770 4096
Just answered my own question... In dock preferences automatic hiding off seems to cause it not to work. Worked when switched on.