Crash report help

I changed my texture setup and when I tried to test it Minecraft crashed

---- Minecraft Crash Report ----

// This is a token for 1 free hug. Redeem at your nearest Mojangsta: [~~HUG~~]

Time: 2/4/14 8:56 PM

Description: Exception in server tick loop

java.lang.NullPointerException

at cpw.mods.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:94)

at net.minecraft.world.gen.ChunkProviderServer.populate(ChunkProviderServer.java:259)

at net.minecraft.world.chunk.Chunk.populateChunk(Chunk.java:1253)

at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:153)

at net.minecraft.server.MinecraftServer.initialWorldChunkLoad(MinecraftServer.java:294)

at net.minecraft.server.integrated.IntegratedServer.loadAllWorlds(IntegratedServer.java:90)

at net.minecraft.server.integrated.IntegratedServer.startServer(IntegratedServer.java:107)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:445)

at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:583)

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: 1.6.4

Operating System: Windows 8 (amd64) version 6.2

Java Version: 1.7.0_45, Oracle Corporation

Java VM Version: Java HotSpot 64-Bit Server VM (mixed mode), Oracle Corporation

Memory: 408961504 bytes (390 MB) / 519438336 bytes (495 MB) up to 1056309248 bytes (1007 MB)

JVM Flags: 4 total; -Xincgc -Xmx1024M -Xms512M -XX:+HeapDumpOnOutOfMemoryError

AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used

Suspicious classes: FML and Forge are installed

IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63

FML: MCP v8.11 FML v6.99.19.964 Minecraft Forge 9.11.1.964 4 mods loaded, 4 mods active

mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available

FML{6.99.19.964} [Forge Mod Loader] (forge-1.6.4-9.11.1.964-mcp.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available

Forge{9.11.1.964} [Minecraft Forge] (forge-1.6.4-9.11.1.964-mcp.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available

LotsofCoals{1.0.0} [Lots of Coals] (bin) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available

Profiler Position: N/A (disabled)

Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used

Player Count: 0 / 8; []

Type: Integrated Server (map_client.txt)

Is Modded: Definitely; Client brand changed to 'fml,forge'