Creating Multiplayer Game Causes Crash

[Blue Ghost]

Hi guys,
After finally getting the DotP2014 mods working, I'm encountering another issue. The game crashes when I click the button to create a free-for-all multiplayer game. Has anyone encountered this issue before, and if so, what can be done to fix it?

EDIT: Searching through the wads I have installed, it appears that the one that's causing the problem is MC Brodie's cards file. Does anyone know anything about this?

EDIT2: Without that file, the game now crashes upon completing a multiplayer match. No idea how to test for what mod is causing that.