Minecraft Forums

I was playing Minecraft yesterday, and after 20 minutes or so of playing it randomly closed and the launcher came up. It didn't say it crashed or anything, so I just restarted it. It starts perfectly fine, but when I try to open my single play game, it crashes I was played the day before for hours and it worked fine, so I don't know why its all of a sudden crashing now. It will let me open other single player games, just not my main one. Can someone please try to help me figure out whats wrong?

Here is my crash report:

---- Minecraft Crash Report ----
// There are four lights!

Time: 29/10/13 1:34 PM
Description: Exception in server tick loop

java.lang.NullPointerException
at net.minecraft.world.gen.structure.StructureStart.func_75068_a(StructureStart.java:47)
at net.minecraft.world.gen.structure.MapGenStructure.func_75051_a(MapGenStructure.java:81)
at net.minecraft.world.gen.ChunkProviderGenerate.func_73153_a(ChunkProviderGenerate.java:533)
at net.minecraft.world.gen.ChunkProviderServer.func_73153_a(ChunkProviderServer.java:258)
at net.minecraft.world.chunk.Chunk.func_76624_a(Chunk.java:1253)
at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:153)
at net.minecraft.server.management.PlayerInstance.<init>(PlayerInstance.java:43)
at net.minecraft.server.management.PlayerManager.func_72690_a(SourceFile:208)
at net.minecraft.server.management.PlayerManager.func_72683_a(SourceFile:240)
at net.minecraft.server.management.ServerConfigurationManager.func_72375_a(ServerConfigurationManager.java:220)
at net.minecraft.server.management.ServerConfigurationManager.func_72377_c(ServerConfigurationManager.java:268)
at net.minecraft.server.management.ServerConfigurationManager.func_72355_a(ServerConfigurationManager.java:136)
at net.minecraft.server.integrated.IntegratedServerListenThread.func_71747_b(IntegratedServerListenThread.java:97)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:691)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:587)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:129)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:484)
at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)


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

-- System Details --
Details:
Minecraft Version: 1.6.4
Operating System: Windows 8 (x86) version 6.2
Java Version: 1.7.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
Memory: 167763016 bytes (159 MB) / 518979584 bytes (494 MB) up to 518979584 bytes (494 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
AABB Pool Size: 39 (2184 bytes; 0 MB) allocated, 39 (2184 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 v6.4.21.917 Minecraft Forge 9.11.1.917 8 mods loaded, 8 mods active
mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
FML{6.4.21.917} [Forge Mod Loader] (minecraftforge-9.11.1.917.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
Forge{9.11.1.917} [Minecraft Forge] (minecraftforge-9.11.1.917.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
CodeChickenCore{0.9.0.6} [CodeChicken Core] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
NotEnoughItems{1.6.1.5} [Not Enough Items] (NotEnoughItems 1.6.1.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
jammyfurniture{4.5} [Jammy Furniture Mod] (1.6.2_Jammy_Furniture_Mod_V4.5.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
UsefulFood{1.4.4} [UsefulFood] (UsefulFood-1.6.2_1.4.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
mod_ZanMinimap{0.9.4} [Zan's Minimap] (ZansMinimap1.6.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
Profiler Position: N/A (disabled)
Vec3 Pool Size: 4 (224 bytes; 0 MB) allocated, 4 (224 bytes; 0 MB) used
Player Count: 1 / 8; [EntityPlayerMP['Mojamajasigni'/11760, l='Sarah', x=-2161.18, y=64.00, z=-435.02]]
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'

Thank you for responding!!
My mods are:
Zan's Minimap
Jammy Furniture Mod
Code Chicken Core
Not Enough Items
Useful Foods

I did have Lots O Mobs, but I deleted it because my game was super laggy, but I was still able to play after I deleted it no problem.

Until, of course, it started crashing.

Make sure all the mods are for Minecraft 1.6.4
If that didn't work ,pm me.