Hello, im from Germany, sorry for my mistakes.
I will play the weaponmod or the Goblin mod with my brother in LAN (ESC + open to LAN).
We have the same version and the same mod and Forge (1.4.7, universal, recommended).
But if I opened the game to LAN, with only one of the two mods and Forge and he join the Server,
there is only the grass in the back and a Close-Button. When he clicked "Close" (after a few seconds), he went to the main Menu.
Please help me.
If possible, please answere in german, I can also use the Google Translator.