Shane C.

I figured it out. After removing Spout from my plugins it worked perfectly.

I have the exact same problem, yet mine hasn't been solved. Here is my error code: 10.07 06:44:13 [server] INFO at net.minecraft.server.ThreadServerApplication.run(SourceFile:492) 10.07 06:44:13 [server] INFO at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:453) 10.07 06:44:13 [server] INFO at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:556) 10.07 06:44:13 [server] INFO at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:78) 10.07 06:44:13 [server] INFO at org.getspout.spout.SpoutNetServerHandler.a(SpoutNetServerHandler.java:169) 10.07 06:44:13 [server] INFO at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:121) 10.07 06:44:13 [server] INFO at net.minecraft.server.NetworkManager.b(NetworkManager.java:234) 10.07 06:44:13 [server] INFO at net.minecraft.server.Packet15Place.handle(SourceFile:39) 10.07 06:44:13 [server] INFO at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:709) 10.07 06:44:13 [server] INFO at net.minecraft.server.ItemInWorldManager.interact(ItemInWorldManager.java:318) 10.07 06:44:13 [server] INFO at net.minecraft.server.ItemStack.placeItem(ItemStack.java:83) 10.07 06:44:13 [server] INFO at net.minecraft.server.ItemBlock.interactWith(ItemBlock.java:84) 10.07 06:44:13 [server] INFO at org.getspout.spout.block.mcblock.CustomContainer.postPlace(CustomContainer.java:435) 10.07 06:44:13 [server] INFO at ic2.common.BlockMultiID.postPlace(BlockMultiID.java:184) 10.07 06:44:13 [server] INFO java.lang.NullPointerException