Help with Movie Battles 1.3.2 Multiplayer, Thread

I've been having problems with my Movie Battles Multiplayer. I downloaded my Jedi Academy from the App Store, and I started playing multiplayer with mods almost immediately. But whenever I tried to go on MBII, my multiplayer would either crash, tell me to download something I couldn't find, or show me an error called cl_ParsePacketEntities : EndMessage. Now I know that usually when this error comes up, it means that the person hacked it from the internet. But I really got it from the Mac App Store, and I still get this error. I've tried adding a JKJALauncher and a new JAMP.exe, but it doesn't work. Is there something I'm doing wrong? Here are the contents of my Jedi Academy.

Help would be greatly appreciated. Thank you!