ser_1414033311583

Spoutcraft Error Report:
    Build: Spoutcraft 1.6.4 / b32
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Stack Trace:
    Exception: ReportedException
    Message: Exception in world tick
    Trace:
       net.minecraft.src.ReportedException: Exception in world tick
	at net.minecraft.src.Minecraft.runTick(Minecraft.java:1754)
	at net.minecraft.src.Minecraft.runGameLoop(Minecraft.java:871)
	at net.minecraft.src.Minecraft.run(Minecraft.java:774)
	at net.minecraft.client.main.Main.main(Main.java:89)
Caused by: java.lang.NullPointerException
	at net.minecraft.src.NetClientHandler.handleOpenWindow(NetClientHandler.java:869)
	at net.minecraft.src.Packet100OpenWindow.processPacket(Packet100OpenWindow.java:39)
	at net.minecraft.src.TcpConnection.processReadPackets(TcpConnection.java:396)
	at net.minecraft.src.NetClientHandler.processReadPackets(NetClientHandler.java:140)
	at net.minecraft.src.WorldClient.tick(WorldClient.java:67)
	at net.minecraft.src.Minecraft.runTick(Minecraft.java:1743)
	... 3 more

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Minecraft Information:
    LWJGL Version: 2.9.0
System Information:
    Operating System: Windows 8
    Operating System Version: 6.2
    Operating System Architecture: amd64
    Java version: 1.7.0_45 64 bit
    Total Memory: 790 MB
    Max Memory: 910 MB
    Memory Free: 509 MB
    CPU Cores: 8
    OpenGL Version: 4.3.12618 Compatibility Profile Context 13.251.0.0
    OpenGL Vendor: ATI Technologies Inc.