You need to register an IMessage class with your SimpleNetworkWrapper before you can send it.
This tutorial explains the Simple Network Implementation, including how to register your messages.
Chisel Facades: For all your decorative pipe-hiding needs.
Please don't PM me to ask for help or to join your mod development team. Asking your question in a public thread preserves it for people who are having the same problem in the future. I'm not interested in developing mods with people.
lol, that took me a while to realize.
Well looks like this 64+ replies thread is done see you soon. (I'll probably run into more problems soon, lol)