Hello!
If u do this
Game exit for Single Player game.
For multiplayer - server going down.
How to fix this problem for Multiplayer? If server up and i login, server going down..
Help please
2012-02-02 11:29:36 [SEVERE] Unexpected exception
java.lang.NullPointerException
at net.minecraft.server.ItemStack.doMaterialsMatch(ItemStack.java:243)
at ic2.api.Ic2Recipes.getOutputFor(Ic2Recipes.java:125)
at ic2.api.Ic2Recipes.getCompressorOutputFor(Ic2Recipes.java:71)
at ic2.common.TileEntityCompressor.getResultFor(TileEntityCompressor.java:34)
at ic2.common.TileEntityCompressor.operate(TileEntityCompressor.java:55)
at ic2.common.TileEntityElectricMachine.l_(TileEntityElectricMachine.java:86)
at net.minecraft.server.World.tickEntities(World.java:1178)
at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:534)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:441)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:465)