Clients can't connect to my AA mod game

[Tsumari]

I've got something happening with the Absolute Annihilation mod and I was hoping someone could help me out. While trying to host with this mod I will receive the two "using script commanders" messages that implies me and my opponent are connecting, but then they can't seem to get in.

Here's my opponent's experience:

xxxxx: i saw a "are you in?" after loading
xxxxx: i tried to say something
xxxxx: but after a short while spring stopped running

I'm on a clean install, as clean as it gets, verified spring version of AA, etc. I installed Spring without XTA just in case, as well.

Thanks,
Tsumari