crashreport

---- Minecraft Crash Report ----
// Why did you do that?

Time: 7/2/15 10:40 PM
Description: Exception in server tick loop

java.lang.NullPointerException: Exception in server tick loop
	at net.minecraft.world.chunk.storage.ExtendedBlockStorage.func_150818_a(ExtendedBlockStorage.java:86)
	at net.minecraft.world.chunk.Chunk.func_150807_a(Chunk.java:653)
	at net.minecraft.world.World.setBlock(World.java:519)
	at net.minecraft.world.gen.feature.WorldGenMinable.generate(WorldGenMinable.java:79)
	at na_t.example.testmod.OreGenerator.generateSurface(OreGenerator.java:40)
	at na_t.example.testmod.OreGenerator.generate(OreGenerator.java:21)
	at cpw.mods.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:112)
	at net.minecraft.world.gen.ChunkProviderServer.populate(ChunkProviderServer.java:314)
	at net.minecraft.world.chunk.Chunk.populateChunk(Chunk.java:1157)
	at net.minecraft.world.gen.ChunkProviderServer.originalLoadChunk(ChunkProviderServer.java:208)
	at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:149)
	at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:119)
	at net.minecraft.server.MinecraftServer.initialWorldChunkLoad(MinecraftServer.java:305)
	at net.minecraft.server.integrated.IntegratedServer.loadAllWorlds(IntegratedServer.java:79)
	at net.minecraft.server.integrated.IntegratedServer.startServer(IntegratedServer.java:96)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:445)
	at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:752)


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: 1.7.10
	Operating System: Windows 8 (amd64) version 6.2
	Java Version: 1.7.0_45, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 833994536 bytes (795 MB) / 1038876672 bytes (990 MB) up to 1038876672 bytes (990 MB)
	JVM Flags: 3 total; -Xincgc -Xmx1024M -Xms1024M
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1448 5 mods loaded, 5 mods active
	States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
	UCHIJAA	mcp{9.05} [Minecraft Coder Pack] (minecraft.jar)
	UCHIJAA	FML{7.10.99.99} [Forge Mod Loader] (forgeSrc-1.7.10-10.13.4.1448-1.7.10.jar)
	UCHIJAA	Forge{10.13.4.1448} [Minecraft Forge] (forgeSrc-1.7.10-10.13.4.1448-1.7.10.jar)
	UCHIJAA	examplemod{1.0} [Example Mod] (bin)
	UCHIJAA	test{0.1} [MaterialCraft] (bin)
	GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
	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'