CC 1.51 crash

---- Minecraft Crash Report ----
// Sorry :(

Time: 21/03/13 01:28
Description: Ticking memory connection

java.lang.NullPointerException
	at dan200.computer.shared.ItemCable.func_77648_a(ItemCable.java:90)
	at net.minecraft.item.ItemStack.func_77943_a(SourceFile:97)
	at net.minecraft.item.ItemInWorldManager.func_73078_a(ItemInWorldManager.java:425)
	at net.minecraft.network.NetServerHandler.func_72472_a(NetServerHandler.java:553)
	at net.minecraft.network.packet.Packet15Place.func_73279_a(SourceFile:58)
	at net.minecraft.network.MemoryConnection.func_74428_b(MemoryConnection.java:89)
	at net.minecraft.network.NetServerHandler.func_72570_d(NetServerHandler.java:134)
	at net.minecraft.network.NetworkListenThread.func_71747_b(NetworkListenThread.java:53)
	at net.minecraft.server.integrated.IntegratedServerListenThread.func_71747_b(IntegratedServerListenThread.java:109)
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:674)
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:570)
	at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:127)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:468)
	at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)


A detailed walkthrough of the error, its code path and all known details is as follows:
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-- System Details --
Details:
	Minecraft Version: 1.5
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_15, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 131377504 bytes (125 MB) / 529203200 bytes (504 MB) up to 529203200 bytes (504 MB)
	JVM Flags: 2 total; -Xms512m -Xmx512m
	AABB Pool Size: 1526 (85456 bytes; 0 MB) allocated, 1461 (81816 bytes; 0 MB) used
	Suspicious classes: FML and Forge are installed
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	FML: MCP v7.42 FML v5.0.24.582 Minecraft Forge 7.7.0.582 5 mods loaded, 5 mods active
	mcp [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
	FML [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
	Forge [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
	ComputerCraft [ComputerCraft] (ComputerCraft1.51.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
	CCTurtle [ComputerCraft Turtles] (ComputerCraft1.51.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 194 (10864 bytes; 0 MB) allocated, 174 (9744 bytes; 0 MB) used
	Player Count: 1 / 8; [EntityPlayerMP['ThePH'/0, l='CC 1.51', x=352.64, y=56.00, z=-313.17]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Definitely; Client brand changed to 'forge,fml'