Minecraft Forums

Here's the crash report:

---- Minecraft Crash Report ----
// Why is it breaking
Time: 2/1/15 4:02 PM
Description: Exception generating new chunk
java.lang.OutOfMemoryError: Java heap space
at net.minecraft.world.chunk.NibbleArray.<init>(SourceFile:9)
at net.minecraft.world.chunk.storage.ExtendedBlockStorage.<init>(SourceFile:25)
at net.minecraft.world.chunk.Chunk.<init>(Chunk.java:141)
at net.minecraft.world.gen.ChunkProviderGenerate.func_73154_d(ChunkProviderGenerate.java:226)
at net.minecraft.world.gen.ChunkProviderServer.originalLoadChunk(ChunkProviderServer.java:172)
at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:131)
at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:101)
at net.minecraft.server.management.PlayerManager$PlayerInstance.<init>(PlayerManager.java:508)
at net.minecraft.server.management.PlayerManager.getOrCreateChunkWatcher(PlayerManager.java:203)
at net.minecraft.server.management.PlayerManager.func_152622_a(PlayerManager.java:438)
at net.minecraft.server.management.ServerConfigurationManager.func_152611_a(ServerConfigurationManager.java:1082)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:191)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427)
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:
---------------------------------------------------------------------------------------
-- Head --
Stacktrace:
at net.minecraft.world.chunk.NibbleArray.<init>(SourceFile:9)
at net.minecraft.world.chunk.storage.ExtendedBlockStorage.<init>(SourceFile:25)
at net.minecraft.world.chunk.Chunk.<init>(Chunk.java:141)
at net.minecraft.world.gen.ChunkProviderGenerate.func_73154_d(ChunkProviderGenerate.java:226)
-- Chunk to be generated --
Details:
Location: 39,-7
Position hash: -30064771033
Generator: RandomLevelSource
Stacktrace:
at net.minecraft.world.gen.ChunkProviderServer.originalLoadChunk(ChunkProviderServer.java:172)
at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:131)
at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:101)
at net.minecraft.server.management.PlayerManager$PlayerInstance.<init>(PlayerManager.java:508)
at net.minecraft.server.management.PlayerManager.getOrCreateChunkWatcher(PlayerManager.java:203)
at net.minecraft.server.management.PlayerManager.func_152622_a(PlayerManager.java:438)
at net.minecraft.server.management.ServerConfigurationManager.func_152611_a(ServerConfigurationManager.java:1082)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:191)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)
-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_71, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 240 bytes (0 MB) / 523501568 bytes (499 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: 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 v7.10.85.1236 Minecraft Forge 10.13.2.1236 Optifine OptiFine_1.7.10_HD_U_B4 17 mods loaded, 17 mods active
mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->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->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->Available->Available
TooManyItems{1.7.10} [TooManyItems] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
battlegear2{1.0.7.0} [Mine & Blade Battlegear 2 - Bullseye] (1.7.10-MB_Battlegear2-Bullseye-1.0.7.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->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->Available->Available
AdvancedHUD{Version [0.1.8] for 1.7.10} [AdvancedHUD] (AdvancedHUD[0.1.8].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
AmnesiaDecorations{1.1.1} [Amnesia Decorations] (AmnesiaDecorations-1.7.10-1.1.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
AmnesiaLights{1.1.1} [Amnesia Lights] (AmnesiaLights-1.7.10-1.1.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
AmnesiaMonsters{1.1.1} [Amnesia Monsters] (AmnesiaMonsters-1.7.10-1.1.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
AmnesiaMusicBox{1.1.1} [Amnesia MusicBox] (AmnesiaMusicBox-1.7.10-1.1.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
hud{1.1} [Better HUD] (Better HUD by NukeDuck [1.7.10][1.1].zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->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->Available->Available
MetallurgyCore{4.0.3} [Metallurgy Core] (MetallurgyCore-1.7.10-4.0.3.11.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Metallurgy{4.0.3} [Metallurgy 4] (Metallurgy-1.7.10-4.0.3.36.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
NGTLib{1.7.10.3} [NGTLib] (NGTLib1.7.10.3_Forge10.13.0.1180.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
RTM{1.7.10.5} [Real Train Mod] (RTM1.7.10.5_Forge10.13.0.1180.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Player Count: 1 / 8; [EntityPlayerMP['MatthewStevenGo'/1073, l='Minecraft Modded 1.7.10 map', x=208.15, y=69.00, z=232.48]]
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'

Can you tell me what's the problem?

Quote from TheWoodGames»

I guess something is wrong with chunks.

I had it solved by limiting render chunks to 2 chunks.