i have the same problem with mine but when i go back to using 3.1.2 and try to get onto my mates server it comes up with
the server requires the following mods:
mod_ComputerCraft 1.41
mod_CCTurtle 1.41
mod_IC2 v1.103
mod_Railcraft 5.4.7
can anyone please help i have no idea wat to do