Windows .exe Feed The Beast lite Server

[KrasserBabo]

I have a problem with my Feed The Beast lite server, when I´m joining the server it crashes am shows me this report:
---- Minecraft Crash Report ---- // I bet Cylons wouldn't have this problem.[/B]
Time: 30.10.13 13:43 Description: Exception ticking world
java.lang.RuntimeException: java.lang.NullPointerException at ic2.core.IC2.onLivingSpecialSpawn(IC2.java:2270) at net.minecraftforge.event.ASMEventHandler_28_IC2_onLivingSpecialSpawn_LivingSpecialSpawnEvent.invoke(.dynamic) at net.minecraftforge.event.ASMEventHandler.invoke(ASMEventHandler.java:35) at net.minecraftforge.event.EventBus.post(EventBus.java:103) at net.minecraftforge.event.ForgeEventFactory.doSpecialSpawn(ForgeEventFactory.java:52) at yp.a(SpawnerAnimals.java:245) at yp.a(SpawnerAnimals.java:187) at in.b(WorldServer.java:162) at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:669) at ho.r(DedicatedServer.java:269) at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:599) at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497) at fy.run(SourceFile:849) Caused by: java.lang.NullPointerException at ic2.core.IC2.onLivingSpecialSpawn(IC2.java:2268) ... 12 more
how can I fix this problem ?
Thanks for your help !

 

[lavarthan]

This is a recent common error. Look here and here for more info. A solution appears to be switching to peaceful. There might be a more recent and better one in the linked thread.

Edit: It appears to be an error with Railcraft Easter egg. Look here for a final solution.