I looked at your capx Underdog. It looks like your UI layout will never come up because of this event:
System / On start of layout / System / Go to Game
So, as soon as someone clicks on Text3 [New Game] from the MainMenu, it loads layout Game instead. But I also see the events for E_Game where you set the layer UI_Result to Visible. Of course it doesn't work, but I think it's due to the layer for UI_Result not residing on the current layout for E_Game. Not sure if this helps any, but just my observations.