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It could just be too many mods but I'm not sure. Here is the crash report and the mods are attached to this post. The version I am using is 1.11.2. It crashes whenever I load up a world and I just downloaded two mods (Buildcraft and Zeiyocraft) so it may be them but I just want to make sure. Thanks for the help!

---- Minecraft Crash Report ----

WARNING: coremods are present:
Contact their authors BEFORE contacting forge

// Why is it breaking

Time: 4/11/17 11:46 AM
Description: Exception ticking world

java.lang.NullPointerException: Exception ticking world
at panda.corn.gen.ComponentCornField.func_74875_a(ComponentCornField.java:58)
at net.minecraft.world.gen.structure.StructureStart.func_75068_a(StructureStart.java:47)
at net.minecraft.world.gen.structure.MapGenStructure.func_175794_a(MapGenStructure.java:94)
at net.minecraft.world.gen.ChunkProviderFlat.func_185931_b(ChunkProviderFlat.java:182)
at net.minecraft.world.chunk.Chunk.func_186034_a(Chunk.java:1000)
at net.minecraft.world.chunk.Chunk.func_186030_a(Chunk.java:983)
at net.minecraft.world.gen.ChunkProviderServer.func_186025_d(ChunkProviderServer.java:158)
at net.minecraft.server.management.PlayerChunkMapEntry.func_187268_a(PlayerChunkMapEntry.java:126)
at net.minecraft.server.management.PlayerChunkMap.func_72693_b(SourceFile:147)
at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:221)
at WorldServerOF.func_72835_b(WorldServerOF.java:37)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:709)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:624)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:240)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:482)
at java.lang.Thread.run(Unknown Source)

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

-- Head --
Thread: Server thread
Stacktrace:
at panda.corn.gen.ComponentCornField.func_74875_a(ComponentCornField.java:58)
at net.minecraft.world.gen.structure.StructureStart.func_75068_a(StructureStart.java:47)
at net.minecraft.world.gen.structure.MapGenStructure.func_175794_a(MapGenStructure.java:94)
at net.minecraft.world.gen.ChunkProviderFlat.func_185931_b(ChunkProviderFlat.java:182)
at net.minecraft.world.chunk.Chunk.func_186034_a(Chunk.java:1000)
at net.minecraft.world.chunk.Chunk.func_186030_a(Chunk.java:983)
at net.minecraft.world.gen.ChunkProviderServer.func_186025_d(ChunkProviderServer.java:158)
at net.minecraft.server.management.PlayerChunkMapEntry.func_187268_a(PlayerChunkMapEntry.java:126)
at net.minecraft.server.management.PlayerChunkMap.func_72693_b(SourceFile:147)
at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:221)
at WorldServerOF.func_72835_b(WorldServerOF.java:37)

-- Affected level --
Details:
Level name: New World--
All players: 1 total; [EntityPlayerMP['ByslicGaming'/203, l='New World--', x=-1360.75, y=3.00, z=1394.31]]
Chunk stats: ServerChunkCache: 796 Drop: 0
Level seed: -8892066595365276958
Level generator: ID 01 - flat, ver 0. Features enabled: true
Level generator options: 3;minecraft:bedrock,2*minecraft:dirt,minecraft:grass;1;village
Level spawn location: World: (-1307,4,1201), Chunk: (at 5,0,1 in -82,75; contains blocks -1312,0,1200 to -1297,255,1215), Region: (-3,2; contains chunks -96,64 to -65,95, blocks -1536,0,1024 to -1025,255,1535)
Level time: 22259 game time, 9411 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 88526 (now: false), thunder time: 138822 (now: false)
Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: true
Stacktrace:
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:709)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:624)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:240)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:482)
at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
Minecraft Version: 1.11.2
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_121, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 309594656 bytes (295 MB) / 1060372480 bytes (1011 MB) up to 1060372480 bytes (1011 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP 9.38 Powered by Forge 13.20.0.2228 Optifine OptiFine_1.11.2_HD_U_B7 40 mods loaded, 40 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UCHIJAAAA minecraft{1.11.2} [Minecraft] (minecraft.jar)
UCHIJAAAA mcp{9.19} [Minecraft Coder Pack] (minecraft.jar)
UCHIJAAAA FML{8.0.99.99} [Forge Mod Loader] (forge-1.11.2-13.20.0.2228.jar)
UCHIJAAAA forge{13.20.0.2228} [Minecraft Forge] (forge-1.11.2-13.20.0.2228.jar)
UCHIJAAAA mercurius_updater{1.0} [mercurius_updater] (MercuriusUpdater-1.11.jar)
UCHIJAAAA newthings{1.1-1.11.2} [101 New Things] (101-New-Things-1.11.2.jar)
UCHIJAAAA rpghud{3.3} [RPG-Hud] ([1.11] RPG-HUD 3.3.jar)
UCHIJAAAA advancedcombat{1.0.1} [Advanced Combat] (Advanced-Swords-1.11.2.jar)
UCHIJAAAA aquaculture{1.5.0} [Aquaculture] (Aquaculture-1.11.2-1.5.0.33.jar)
UCHIJAAAA baubles{1.4.3} [Baubles] (Baubles-1.11-1.4.3 (1).jar)
UCHIJAAAA betterbuilderswands{0.11.1} [Better Builder's Wands] (BetterBuildersWands-1.11.2.jar)
UCHIJAAAA buildcraftlib{7.99.0} [BuildCraft Lib] (Build-Craft-1.11.2.jar)
UCHIJAAAA buildcraftcore{7.99.0} [BuildCraft] (Build-Craft-1.11.2.jar)
UCHIJAAAA buildcraftfactory{7.99.0} [BC Factory] (Build-Craft-1.11.2.jar)
UCHIJAAAA buildcrafttransport{7.99.0} [BC Transport] (Build-Craft-1.11.2.jar)
UCHIJAAAA buildcraftbuilders{7.99.0} [BC Builders] (Build-Craft-1.11.2.jar)
UCHIJAAAA buildcraftenergy{7.99.0} [BC Energy] (Build-Craft-1.11.2.jar)
UCHIJAAAA buildcraftrobotics{7.99.0} [BC Robotics] (Build-Craft-1.11.2.jar)
UCHIJAAAA buildcraftsilicon{7.99.0} [BC Silicon] (Build-Craft-1.11.2.jar)
UCHIJAAAA cookingforblockheads{5.2.6} [Cooking for Blockheads] (CookingForBlockheads-1.11.2.jar)
UCHIJAAAA modcurrency{1.11.2-1.0.1-Beta} [Currency Mod] (Currency-1.11.2.jar)
UCHIJAAAA customnpcs{1.11.2} [CustomNPCs] (CustomNPCs-1.11.2.jar)
UCHIJAAAA cyclicmagic{1.2.4} [Cyclic] (Cyclic-1.11.2.jar)
UCHIJAAAA torohealthmod{1.11.2-8} [ToroHealth Damage Indicators] (Damage-Indicators-1.11.2.jar)
UCHIJAAAA jei{4.2.0.210} [Just Enough Items] (jei_1.11.2-4.2.0.210.jar)
UCHIJAAAA journeymap{1.11.2-5.4.4} [JourneyMap] (JourneyMap-1.11.2.jar)
UCHIJAAAA thinkbigcore{1.6.1} [§5§m===§r §e§lThink Big Core §5§m===§r] (Think Big Core V1.6.1 - 1.11.2.jar)
UCHIJAAAA lot{1.3.8} [§9§lLots of Things] (Lots of Things V1.3.8 - 1.11.2.jar)
UCHIJAAAA cfm{4.1.1} [MrCrayfish's Furniture Mod] (MrCrayFishs-Furniture-1.11.2.jar)
UCHIJAAAA nuclearcraft{2.0} [NuclearCraft] (NuclearCraft-1.11.2.jar)
UCHIJAAAA primal{0.3.1} [PrimalCore] (PrimalCore-0.3.1.jar)
UCHIJAAAA simplecorn{2.1.0} [Simple Corn] (SimpleCorn-1.11.2.jar)
UCHIJAAAA sparkshammers{1.11.2-1.6.3} [Spark's Hammers] (Sparks-Hammers-1.11.2.jar)
UCHIJAAAA treechopper{1.1.2} [Tree Chopper] (TreeChopper-1.11.2.jar)
UCHIJAAAA usernamemod{1.5} [Ingame UserName Changer] (UserNameMod-v1.5-ForgeMod.1.11.2.jar)
UCHIJAAAA vc{4.24.0} [ViesCraft] (ViesCraft-1.11.2.jar)
UCHIJAAAA waystones{3.0.10} [Waystones] (Waystones_1.11.2-3.0.10.jar)
UCHIJAAAA wearablebackpacks{2.1.0} [Wearable Backpacks] (WearableBackpacks-1.11.2-2.1.0.jar)
UCHIJAAAA worldedit{6.1.6} [WorldEdit] (worldedit-forge-mc1.11-6.1.6-dist.jar)
UCHIJAAAA zeiyocraft{0.8.1} [ZeiyoCraft] (Zeiyocraft-1.11.2.jar)
Loaded coremods (and transformers):
GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
Profiler Position: N/A (disabled)
Player Count: 1 / 8; [EntityPlayerMP['ByslicGaming'/203, l='New World--', x=-1360.75, y=3.00, z=1394.31]]
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'
OptiFine Version: OptiFine_1.11.2_HD_U_B7
Render Distance Chunks: 9
Mipmaps: 4
Anisotropic Filtering: 1
Antialiasing: 0
Multitexture: false
Shaders: null
OpenGlVersion: 4.3.0 - Build 20.19.15.4531
OpenGlRenderer: Intel(R) HD Graphics 4400
OpenGlVendor: Intel
CpuCount: 4

SimpleCorn is crashing. Try removing it.