SGCraft Vanilla Server Crash

---- Minecraft Crash Report ----
// This doesn't make any sense!

Time: 2/7/13 1:29 PM
Description: Exception in server tick loop

java.lang.NoSuchMethodError: lq.h(DDD)V
	at gcewing.sg.SGBaseTE.teleportWithinDimension(SGBaseTE.java:598)
	at gcewing.sg.SGBaseTE.teleportEntity(SGBaseTE.java:592)
	at gcewing.sg.SGBaseTE.entityInPortal(SGBaseTE.java:569)
	at gcewing.sg.SGPortalBlock.a(SGPortalBlock.java:59)
	at lq.D(Entity.java:1011)
	at lq.d(Entity.java:955)
	at iv.a(NetServerHandler.java:347)
	at eb.a(SourceFile:136)
	at cg.b(TcpConnection.java:458)
	at iv.d(NetServerHandler.java:136)
	at iw.b(NetworkListenThread.java:57)
	at ht.b(SourceFile:30)
	at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:703)
	at ho.r(DedicatedServer.java:270)
	at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:599)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)
	at fy.run(SourceFile:849)


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

-- System Details --
Details:
	Minecraft Version: 1.4.7
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_07, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 931515048 bytes (888 MB) / 1029046272 bytes (981 MB) up to 2002124800 bytes (1909 MB)
	JVM Flags: 2 total; -Xmx2148M -Xms1024M
	AABB Pool Size: 4442 (248752 bytes; 0 MB) allocated, 4133 (231448 bytes; 0 MB) used
	Suspicious classes: FML and Forge are installed
	IntCache: cache: 0, tcache: 0, allocated: 1, tallocated: 63
	FML: MCP v7.26 FML v4.7.4.520 Minecraft Forge 6.6.0.497 10 mods loaded, 10 mods active
	mcp [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	FML [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	Forge [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	Castle Defenders [Castle Defenders] (minecraft_server.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	denLib [denLib] (denLib-2.1.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	HDSAC [HD Skins and Cloaks] (HDSAC-1.1.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	JinRyuu_DragonBlockC [Dragon Block C] (DragonBlockC-Universal-v0.99b.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	GravityScience [Gravity Science] (Gravity Science V2 - 1.4.6.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	PortalGun [Portal Gun] (PortalGun1.4.7v3.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	SGCraft [SG Craft] (SGCraft-0.1.1-mc1.4.6.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 1089 (60984 bytes; 0 MB) allocated, 1005 (56280 bytes; 0 MB) used
	Player Count: 1 / 20; [iq['Jared'/359, l='world', x=42.39, y=69.00, z=180.55]]
	Is Modded: Definitely; Server brand changed to 'fml'
	Type: Dedicated Server (map_server.txt)