Почему крашится Minecraft 1.7.2 c модами Hitech

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- в Моды
1

Играю в одиночке игра не крашится все работает, а вот когда открываю мир для сети и подключается друг, то игра крашиться через 3-5 минут. Порты открыты.
Дополнено (1). ----Minecraft Crash Report ----
// This doesn't make any sense!

Time: 22.11.15 9:22
Description: Starting integrated server

java.lang.NoClassDefFoundError: micdoodle8/mods/galacticraft/core/entities/player/GCEntityPlayerMP
at net.minecraft.server.integrated.IntegratedServer.(IntegratedServer.java:50)
at net.minecraft.client.Minecraft.func_71371_a(MinecraftOverlay.java:2042)
at cpw.mods.fml.client.FMLClientHandler.tryLoadExistingWorld(FMLClientHandler.java:669)
at net.minecraft.client.gui.GuiSelectWorld.func_146615_e(GuiSelectWorld.java:183)
at net.minecraft.client.gui.GuiSelectWorld$List.func_148144_a(GuiSelectWorld.java:257)
at net.minecraft.client.gui.GuiSlot.func_148128_a(GuiSlot.java:209)
at net.minecraft.client.gui.GuiSelectWorld.func_73863_a(GuiSelectWorld.java:216)
at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1354)
at net.minecraft.client.Minecraft.func_71411_J(MinecraftOverlay.java:945)
at net.minecraft.client.Minecraft.func_99999_d(MinecraftOverlay.java:835)
at net.minecraft.client.main.Main.main(SourceFile:103)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:134)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
Caused by: java.lang.ClassNotFoundException: micdoodle8.mods.galacticraft.core.entities.player.GCEntityPlayerMP
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:188)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
… 17 more
Caused by: java.lan

Ki

Краш-репорт залей.