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I really need help pls i'm using MC 1.6.4 this crash started happening a few days ago whenever i create a new world after i play for a while in it that happens i don't understand the crash report or why it's happening :\
---- Minecraft Crash Report ----
// Don't be sad, have a hug! <3

Time: 05/07/17 12:11 م
Description: Exception in server tick loop

java.lang.NullPointerException
at danger.orespawn.OreSpawnWorld.generateSurface(OreSpawnWorld.java:335)
at danger.orespawn.OreSpawnWorld.generate(OreSpawnWorld.java:230)
at cpw.mods.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:103)
at net.minecraft.world.gen.ChunkProviderServer.func_73153_a(ChunkProviderServer.java:259)
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:51)
at net.minecraft.server.management.PlayerManager.getOrCreateChunkWatcher(PlayerManager.java:193)
at net.minecraft.server.management.PlayerManager.func_72690_a(PlayerManager.java:183)
at net.minecraft.server.management.PlayerManager.func_72683_a(PlayerManager.java:233)
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:175)
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 7 (x86) version 6.1
Java Version: 1.8.0_131, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 160149792 bytes (152 MB) / 480829440 bytes (458 MB) up to 523501568 bytes (499 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
AABB Pool Size: 2331 (130536 bytes; 0 MB) allocated, 2331 (130536 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 11, allocated: 3, tallocated: 63
FML: MCP v8.11 FML v6.4.50.1,345 Minecraft Forge 9.11.1.1345 Optifine OptiFine_1.6.4_HD_U_C8 25 mods loaded, 25 mods active
mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{6.4.50.1,345} [Forge Mod Loader] (minecraftforge-9.11.1.1345.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{9.11.1.1345} [Minecraft Forge] (minecraftforge-9.11.1.1345.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
CodeChickenCore{0.9.0.9} [CodeChicken Core] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
NotEnoughItems{1.6.1.9} [Not Enough Items] (Not-Enough-Items-1.6.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
eplus{1.16.5b} [Enchanting Plus] (14151575504_Enchanting-Plus-Mod-1.6.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
mod_ZanMinimap{0.9.4} [Zan's Minimap] (14158977062_ZansMinimap1.6.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
AnimationAPI{1.1.1} [AnimationAPI] (AnimationAPI-1.6.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Backpack{1.28.37} [Backpack] (Backpacks-Mod-1.6.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BetterDungeons{2.4} [Chocolate quest] (BetterDungeons2091.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
DungeonPack{1.6.4} [DungeonPack] (Dungeon-Pack-Mod-1.6.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
eternalfrost{1.5b1} [Eternal Frost] (EternalFrost.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Godzilla{1.2} [Godzilla Mod] (Godzilla-Mod-1.6.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
iChunUtil{2.4.0} [iChunUtil] (iChun-Util-Mod-1.6.x.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
GraviGun{2.0.0} [GraviGun] (Gravity-Gun-Mod-1.6.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Hats{2.1.6} [Hats] (iChuns-Hats-Mod-1.6.4_2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
battlegear2{1.0.4.8} [Mine & Blade Battlegear 2 - Bullseye] (Mine-Blade-Battlegear-2-Mod-1.6.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
MoreSwordsMod{2.6.0} [More Swords Mod] (More_Swords_Mod_2.6.0_For_1.6.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Morph{0.7.1} [Morph] (Morphing-Mod-1.6.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
MutantCreatures{1.4.4} [Mutant Creatures] (Mutant-Creatures-Mod-1.6.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
OreSpawn{164.20} [OreSpawn] (orespawn164v20a_2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
mod_Unlimited{2.3} [mod_Unlimited] (Superheroes+Unlimited+Mod+V2.3.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
gibby_pun{1.5} [The Pun Mod] (The-Ultimate-Pun-Mod-1.6.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
TwilightForest{1.20.0} [The Twilight Forest] (TwilightForestMod1.6.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
nolpfij_wildycraft{3.3.1} [Wildycraft] (Wildycraft-Mod-1.6.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Profiler Position: N/A (disabled)
Vec3 Pool Size: 1177 (65912 bytes; 0 MB) allocated, 1168 (65408 bytes; 0 MB) used
Player Count: 1 / 8; [EntityPlayerMP['wael'/247, l='New Worldlol', x=1792.03, y=90.48, z=208.40]]
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'