Unleashed - v1.1.3 (stock) now crashes after a few min of play

[JonOfArabia]

-FTB Unleashed 1.1.3
-Stock - no outside mods installed
-Texturepack - sphax + FTB addition x128
-Ram set to 4Gb.
-No start up java parameters

Proc: i5-3470 3.2GHz
Ram - 8gb
Win7 x64bit

Like the title says, for no obvious reason, my world now crashes after a few min of play, if that.

Primary Mods in use are:
Tinkers Construct
Logistic Pipes
Mystcraft - only the initial tables are placed, no ages yet
IC2 and BC
RailCraft


Crash Screen: http://pastebin.com/nZ3WS7ys
Crash Log: http://pastebin.com/Aq2Si74C

Truncated Error Message:

Description: Ticking memory connection
java.lang.ArrayIndexOutOfBoundsException: -94
        at net.minecraft.world.chunk.storage.ExtendedBlockStorage.func_76655_a(SourceFile:47)
        at net.minecraft.world.chunk.Chunk.func_76592_a(Chunk.java:709)
        at net.minecraft.world.World.func_72832_d(World.java:558)
        at thaumcraft.common.world.WorldGenHilltopStones.func_76484_a(WorldGenHilltopStones.java:95)
        at thaumcraft.common.world.ThaumcraftWorldGenerator.generateSurface(ThaumcraftWorldGenerator.java:171)
        at thaumcraft.common.world.ThaumcraftWorldGenerator.worldGeneration(ThaumcraftWorldGenerator.java:41)
        at thaumcraft.common.world.ThaumcraftWorldGenerator.generate(ThaumcraftWorldGenerator.java:29)
        at cpw.mods.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:102)
        at net.minecraft.world.gen.ChunkProviderServer.func_73153_a(ChunkProviderServer.java:259)
        at net.minecraft.world.chunk.Chunk.func_76624_a(Chunk.java:1249)
        at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:153)
        at net.minecraft.server.management.PlayerInstance.<init>(PlayerInstance.java:36)
        at net.minecraft.server.management.PlayerManager.func_72690_a(SourceFile:172)
        at net.minecraft.server.management.PlayerManager.func_72685_d(SourceFile:300)

 

[NEXUS2345]

Redownload the pack, Thaumcraft world gen is erroring and it is likely due to a corrupted class file.