[Demul Games doesn't work in Launchbox]

I'm having the exact same problem with my screen flashing the same menu then disappearing. Demul works perfect by itself, but once I try launching it from Launchbox I get that mentioned screen. I have done all the proper checks and commands for associated platforms. 

[Calling All Media and Theme Creators!]

Can we also get a MAME filter for trackball games?