java.lang.NullPointerException
	at buildcraft.transport.GuiGateInterface.<init>(GuiGateInterface.java:173)
	at buildcraft.transport.GuiHandler.getGuiElement(GuiHandler.java:29)
	at yw.openGui(EntityPlayer.java:1946)
	at forge.PacketHandlerClient.onOpenGui(PacketHandlerClient.java:236)
	at forge.PacketHandlerClient.onPacketData(PacketHandlerClient.java:52)
	at forge.MessageManager.dispatchIncomingMessage(MessageManager.java:420)
	at forge.ForgeHooksClient.onCustomPayload(ForgeHooksClient.java:620)
	at adl.a(NetClientHandler.java:1170)
	at ee.a(SourceFile:46)
	at lg.b(NetworkManager.java:343)
	at adl.b(NetClientHandler.java:71)
	at je.c(WorldClient.java:72)
	at net.minecraft.client.Minecraft.k(Minecraft.java:1873)
	at net.minecraft.client.Minecraft.x(Minecraft.java:822)
	at net.minecraft.client.Minecraft.run(Minecraft.java:750)
	at java.lang.Thread.run(Unknown Source)