MC Error 2

---- Minecraft Crash Report ----
// Who set us up the TNT?

Time: 04.10.12 17:39
Description: Unexpected error

java.nio.BufferOverflowException
	at java.nio.Buffer.nextPutIndex(Unknown Source)
	at java.nio.DirectByteBuffer.putShort(Unknown Source)
	at avd.a(Tessellator.java)
	at avd.a(Tessellator.java:682)
	at avf.d(RenderBlocks.java:6710)
	at avf.a(RenderBlocks.java:4773)
	at avf.q(RenderBlocks.java:4277)
	at avf.a(RenderBlocks.java:5673)
	at avf.b(RenderBlocks.java:419)
	at aur.a(WorldRenderer.java:282)
	at ava.a(RenderGlobal.java:1573)
	at auv.a(EntityRenderer.java:1338)
	at Shaders.beginRender(Shaders.java:249)
	at auv.a(EntityRenderer.java)
	at auv.b(EntityRenderer.java:1084)
	at net.minecraft.client.Minecraft.J(SourceFile:607)
	at net.minecraft.client.Minecraft.run(SourceFile:535)
	at java.lang.Thread.run(Unknown Source)

Relevant Details:
- Minecraft Version: 1.3.1
- Operating System: Windows 7 (amd64) version 6.1
- Java Version: 1.6.0_31, Sun Microsystems Inc.
- Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
- Memory: 606080048 bytes (578 MB) / 682688512 bytes (651 MB) up to 954466304 bytes (910 MB)
- JVM Flags: 2 total; -Xms512m -Xmx1024m
- LWJGL: 2.4.2
- OpenGL: GeForce GTX 560 Ti/PCI/SSE2 GL version 4.1.0, NVIDIA Corporation
- Is Modded: Probably not
- Type: Client
- Texture Pack: 64px 4.5.1_3 [mc1.3.1] HD MK SHADERS.zip
- Profiler Position: N/A (disabled)
- World MpServer Entities: 2 total; [atf['xXgho5tXx'/51159653, l='MpServer', x=-1435,90, y=65,62, z=276,15], mt['Sheep'/51159744, l='MpServer', x=-1361,50, y=68,00, z=329,06]]
- World MpServer Players: 1 total; [atf['xXgho5tXx'/51159653, l='MpServer', x=-1435,90, y=65,62, z=276,15]]
- World MpServer Chunk Stats: MultiplayerChunkCache: 225
- Forced Entities: 2 total; [atf['xXgho5tXx'/51159653, l='MpServer', x=-1435,90, y=65,62, z=276,15], mt['Sheep'/51159744, l='MpServer', x=-1361,50, y=68,00, z=329,06]]
- Retry Entities: 0 total; []