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I just recently changed my skin and now when i go to some of my worlds it crashes the game. Here is the crash report.



---- Minecraft Crash Report ----
// I just don't know what went wrong

Time: 2/28/15 9:52 AM
Description: Exception in server tick loop

java.lang.ArrayIndexOutOfBoundsException: -542418
at java.util.ArrayList.elementData(Unknown Source)
at java.util.ArrayList.set(Unknown Source)
at net.minecraft.world.chunk.storage.RegionFile.<init>(RegionFile.java:90)
at net.minecraft.world.chunk.storage.RegionFileCache.func_76550_a(SourceFile:60)
at net.minecraft.world.chunk.storage.AnvilChunkLoader.chunkExists(AnvilChunkLoader.java:71)
at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:117)
at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:101)
at net.minecraft.server.MinecraftServer.func_71222_d(MinecraftServer.java:265)
at net.minecraft.server.integrated.IntegratedServer.func_71247_a(IntegratedServer.java:78)
at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:92)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:387)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)


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

-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.8.0_31, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 184369904 bytes (175 MB) / 440094720 bytes (419 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
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP v9.05 FML v7.10.85.1236 Minecraft Forge 10.13.2.1236 18 mods loaded, 18 mods active
mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
FML{7.10.85.1236} [Forge Mod Loader] (forge-1.7.10-10.13.2.1236.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
Forge{10.13.2.1236} [Minecraft Forge] (forge-1.7.10-10.13.2.1236.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
appliedenergistics2-core{rv1-stable-1} [AppliedEnergistics2 Core] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
CodeChickenCore{1.0.2.11} [CodeChicken Core] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
NotEnoughItems{1.0.2.15} [Not Enough Items] (NotEnoughItems-1.7.10-1.0.2.15-universal.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
FLabsBF{4.1.2} [Better Furnaces] ([1.7.10]Better_Furnaces_V4.1.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
adventurebackpack{0.7.5} [Adventure Backpack] (adventurebackpack-1.7.10-0.7.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
appliedenergistics2{rv1-stable-1} [Applied Energistics 2] (appliedenergistics2-rv1-stable-1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
BiblioCraft{1.7.5} [BiblioCraft] (BiblioCraft[v1.7.5][MC1.7.10].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
flansmod{4.9.0} [Flan's Mod] (Flans Mod-1.7.10-4.9.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
jkelly-marvel{v1.0} [Marvel Craft Universe] (MarvelCraftUniverse-1.7.10_1.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
radixcore{1.3.3} [RadixCore] (RadixCore-1.7.x-1.3.3-universal.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
mca{4.1.4} [Minecraft Comes Alive] (MCA-1.7.10-4.1.4-universal.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
Scenter{1.7.10-3.2.0} [Scenter] (scenter-1.7.10-3.2.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
TooMuchTNT{2.9} [TooMuchTNT] (TooMuchTNT v2.9.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
voxelmap{1.7.10} [VoxelMap No Radar] (voxelmapNoRadar-1.7.10-1.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
Waila{1.5.3} [Waila] (Waila-Mod-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
AE2 Version: stable rv1-stable-1 for Forge 10.13.0.1187
AE2 Integration: IC2:OFF, RotaryCraft:OFF, RC:OFF, BC:OFF, MJ6:OFF, MJ5:OFF, RF:ON, RFItem:ON, MFR:OFF, DSU:OFF, FZ:OFF, FMP:OFF, RB:OFF, CLApi:OFF, Waila:ON, InvTweaks:OFF, NEI:ON, CraftGuide:OFF, Mekanism:OFF, ImmibisMicroblocks:OFF, BetterStorage:OFF
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'

I need answers