Sorry guys, I've been away for a few days.
a) How many monitors have you got? I have two total monitors
a2) Essentially, are you using both "1st Display" and "2nd Display" on Marquee Masher - i.e. having MM generate images on two displays, not just one? I just need MM on the secondary monitor.
b ) What gets displayed on each monitor? When I start GameEx is on the main screen, the second monitor is blank. When I start the game, the second monitor stays blank the entire time until I exit GameEx.
c) Have you got "Setup Wizard>Display Settings>Hide Operating System" enabled? I'm wondering what the black display is going over the top of MM. I have "Hide Operating System Enabled." When I disable it and test, the desktop shows until the game starts, then it goes blank. When I exit the game, the desktop re-appears on the second screen.