still getstackinslot

---- Minecraft Crash Report ----
// Ouch. That hurt :(

Time: 11/2/15 6:07 AM
Description: Ticking memory connection

java.lang.NullPointerException: Ticking memory connection
	at com.sudwood.advancedutilities.tileentity.TileEntityWoodenCrate.getStackInSlot(TileEntityWoodenCrate.java:59)
	at net.minecraft.inventory.Slot.getStack(Slot.java:88)
	at net.minecraft.inventory.Container.detectAndSendChanges(Container.java:89)
	at com.sudwood.advancedutilities.container.ContainerWoodenCrate.detectAndSendChanges(ContainerWoodenCrate.java:70)
	at net.minecraft.network.NetHandlerPlayServer.processClickWindow(NetHandlerPlayServer.java:961)
	at net.minecraft.network.play.client.C0EPacketClickWindow.processPacket(C0EPacketClickWindow.java:41)
	at net.minecraft.network.play.client.C0EPacketClickWindow.processPacket(C0EPacketClickWindow.java:113)
	at net.minecraft.network.NetworkManager.processReceivedPackets(NetworkManager.java:241)
	at net.minecraft.network.NetworkSystem.networkTick(NetworkSystem.java:182)
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:726)
	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:614)
	at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:118)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:485)
	at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:752)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
	at com.sudwood.advancedutilities.tileentity.TileEntityWoodenCrate.getStackInSlot(TileEntityWoodenCrate.java:59)
	at net.minecraft.inventory.Slot.getStack(Slot.java:88)
	at net.minecraft.inventory.Container.detectAndSendChanges(Container.java:89)
	at com.sudwood.advancedutilities.container.ContainerWoodenCrate.detectAndSendChanges(ContainerWoodenCrate.java:70)
	at net.minecraft.network.NetHandlerPlayServer.processClickWindow(NetHandlerPlayServer.java:961)
	at net.minecraft.network.play.client.C0EPacketClickWindow.processPacket(C0EPacketClickWindow.java:41)
	at net.minecraft.network.play.client.C0EPacketClickWindow.processPacket(C0EPacketClickWindow.java:113)
	at net.minecraft.network.NetworkManager.processReceivedPackets(NetworkManager.java:241)

-- Ticking connection --
Details:
	Connection: net.minecraft.network.NetworkManager@542fddc0
Stacktrace:
	at net.minecraft.network.NetworkSystem.networkTick(NetworkSystem.java:182)
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:726)
	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:614)
	at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:118)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:485)
	at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:752)

-- System Details --
Details:
	Minecraft Version: 1.7.10
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_60, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 583530448 bytes (556 MB) / 1037959168 bytes (989 MB) up to 1037959168 bytes (989 MB)
	JVM Flags: 3 total; -Xincgc -Xmx1024M -Xms1024M
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
	FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1448 4 mods loaded, 4 mods active
	States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
	UCHIJAAAA	mcp{9.05} [Minecraft Coder Pack] (minecraft.jar)
	UCHIJAAAA	FML{7.10.99.99} [Forge Mod Loader] (forgeSrc-1.7.10-10.13.4.1448-1.7.10.jar)
	UCHIJAAAA	Forge{10.13.4.1448} [Minecraft Forge] (forgeSrc-1.7.10-10.13.4.1448-1.7.10.jar)
	UCHIJAAAA	advancedutilities{A-0.511} [advancedutilities] (bin)
	GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Player Count: 1 / 8; [EntityPlayerMP['Player633'/16, l='New World', x=10012.77, y=79.00, z=9993.22]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Definitely; Client brand changed to 'fml,forge'