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    <title>Mojang Studios Jira</title>
    <link>https://bugs.mojang.com</link>
    <description>This file is an XML representation of an issue</description>
    <language>en</language>    <build-info>
        <version>9.12.2</version>
        <build-number>9120002</build-number>
        <build-date>10-01-2024</build-date>
    </build-info>


<item>
            <title>[MC-8111] Crash on creating world</title>
                <link>https://bugs.mojang.com/browse/MC-8111</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description></description>
                <environment>---- Minecraft Crash Report ----&lt;br/&gt;
// Ouch. That hurt :(&lt;br/&gt;
&lt;br/&gt;
Time: 22.01.13 15:50&lt;br/&gt;
Description: Exception while ticking a block&lt;br/&gt;
&lt;br/&gt;
java.lang.IllegalStateException: Entity is already tracked!&lt;br/&gt;
	at net.minecraft.entity.EntityTracker.addEntityToTracker(EntityTracker.java:189)&lt;br/&gt;
	at net.minecraft.entity.EntityTracker.addEntityToTracker(EntityTracker.java:155)&lt;br/&gt;
	at net.minecraft.world.WorldManager.obtainEntitySkin(WorldManager.java:36)&lt;br/&gt;
	at net.minecraft.world.World.obtainEntitySkin(World.java:1468)&lt;br/&gt;
	at net.minecraft.world.WorldServer.obtainEntitySkin(WorldServer.java:813)&lt;br/&gt;
	at net.minecraft.world.World.spawnEntityInWorld(World.java:1456)&lt;br/&gt;
	at net.minecraft.block.BlockSand.tryToFall(BlockSand.java:68)&lt;br/&gt;
	at net.minecraft.block.BlockSand.updateTick(BlockSand.java:49)&lt;br/&gt;
	at net.minecraft.world.WorldServer.tickUpdates(WorldServer.java:534)&lt;br/&gt;
	at net.minecraft.world.WorldServer.tick(WorldServer.java:162)&lt;br/&gt;
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:651)&lt;br/&gt;
	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:585)&lt;br/&gt;
	at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:136)&lt;br/&gt;
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:495)&lt;br/&gt;
	at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)&lt;br/&gt;
&lt;br/&gt;
&lt;br/&gt;
A detailed walkthrough of the error, its code path and all known details is as follows:&lt;br/&gt;
---------------------------------------------------------------------------------------&lt;br/&gt;
&lt;br/&gt;
-- Head --&lt;br/&gt;
Stacktrace:&lt;br/&gt;
	at net.minecraft.entity.EntityTracker.addEntityToTracker(EntityTracker.java:189)&lt;br/&gt;
	at net.minecraft.entity.EntityTracker.addEntityToTracker(EntityTracker.java:155)&lt;br/&gt;
	at net.minecraft.world.WorldManager.obtainEntitySkin(WorldManager.java:36)&lt;br/&gt;
	at net.minecraft.world.World.obtainEntitySkin(World.java:1468)&lt;br/&gt;
	at net.minecraft.world.WorldServer.obtainEntitySkin(WorldServer.java:813)&lt;br/&gt;
	at net.minecraft.world.World.spawnEntityInWorld(World.java:1456)&lt;br/&gt;
	at net.minecraft.block.BlockSand.tryToFall(BlockSand.java:68)&lt;br/&gt;
	at net.minecraft.block.BlockSand.updateTick(BlockSand.java:49)&lt;br/&gt;
&lt;br/&gt;
-- Block being ticked --&lt;br/&gt;
Details:&lt;br/&gt;
	Block type: ID #12 (tile.sand // net.minecraft.block.BlockSand)&lt;br/&gt;
	Block data value: 0 / 0x0 / 0b0000&lt;br/&gt;
	Block location: World: (-100,46,173), Chunk: (at 12,2,13 in -7,10; contains blocks -112,0,160 to -97,255,175), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)&lt;br/&gt;
Stacktrace:&lt;br/&gt;
	at net.minecraft.world.WorldServer.tickUpdates(WorldServer.java:534)&lt;br/&gt;
	at net.minecraft.world.WorldServer.tick(WorldServer.java:162)&lt;br/&gt;
&lt;br/&gt;
-- Affected level --&lt;br/&gt;
Details:&lt;br/&gt;
	Level name: New World&lt;br/&gt;
	All players: 1 total; [EntityPlayerMP[&amp;#39;Player889&amp;#39;/27, l=&amp;#39;New World&amp;#39;, x=-222,24, y=64,00, z=99,72]]&lt;br/&gt;
	Chunk stats: ServerChunkCache: 625 Drop: 0&lt;br/&gt;
	Level seed: 1746174897155170098&lt;br/&gt;
	Level generator: ID 00 - default, ver 1. Features enabled: true&lt;br/&gt;
	Level generator options: &lt;br/&gt;
	Level spawn location: World: (-212,64,96), Chunk: (at 12,4,0 in -14,6; contains blocks -224,0,96 to -209,255,111), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)&lt;br/&gt;
	Level time: 196 game time, 196 day time&lt;br/&gt;
	Level dimension: 0&lt;br/&gt;
	Level storage version: 0x04ABD - Anvil&lt;br/&gt;
	Level weather: Rain time: 41053 (now: false), thunder time: 90548 (now: false)&lt;br/&gt;
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true&lt;br/&gt;
Stacktrace:&lt;br/&gt;
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:651)&lt;br/&gt;
	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:585)&lt;br/&gt;
	at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:136)&lt;br/&gt;
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:495)&lt;br/&gt;
	at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)&lt;br/&gt;
&lt;br/&gt;
-- System Details --&lt;br/&gt;
Details:&lt;br/&gt;
	Minecraft Version: 1.4.7&lt;br/&gt;
	Operating System: Windows 7 (amd64) version 6.1&lt;br/&gt;
	Java Version: 1.7.0_11, Oracle Corporation&lt;br/&gt;
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation&lt;br/&gt;
	Memory: 826152152 bytes (787 MB) / 1056309248 bytes (1007 MB) up to 1056309248 bytes (1007 MB)&lt;br/&gt;
	JVM Flags: 3 total; -Xincgc -Xms1024M -Xmx1024M&lt;br/&gt;
	AABB Pool Size: 3507 (196392 bytes; 0 MB) allocated, 4 (224 bytes; 0 MB) used&lt;br/&gt;
	Suspicious classes: Start[net.minecraft.block.Block, BlockContainer, BlockBrewingStand, ...], [net.minecraft.block.material.Material, MaterialTransparent, MapColor, ...], [net.minecraft.client.MinecraftFakeLauncher, ThreadShutdown, GameWindowListener, ...], [net.minecraft.client.audio.SoundManager, SoundPool, SoundPoolEntry], [net.minecraft.client.entity.EntityPlayerSP, EntityClientPlayerMP, EntityOtherPlayerMP], [net.minecraft.client.gui.Gui, GuiScreen, GuiMemoryErrorScreen, ...], [net.minecraft.client.gui.achievement.GuiAchievement, GuiAchievements, GuiStats], [net.minecraft.client.gui.inventory.GuiContainer, GuiInventory, GuiFurnace, ...], [net.minecraft.client.model.ModelBase, ModelBiped, ModelRenderer, ...], [net.minecraft.client.multiplayer.WorldClient, GuiConnecting, ServerData, ...], [net.minecraft.client.particle.EffectRenderer, EntityFX, EntitySmokeFX, ...], [net.minecraft.client.renderer.InventoryEffectRenderer, RenderGlobal, RenderEngine, ...], [net.minecraft.client.renderer.culling.ICamera, ClippingHelper, ClippingHelperImpl, ...], [net.minecraft.client.renderer.entity.Render, RenderItem, RenderManager, ...], [net.minecraft.client.renderer.texturefx.TextureFX, TextureLavaFX, TextureWaterFX, ...], [net.minecraft.client.renderer.tileentity.RenderEnderCrystal, RenderItemFrame, RenderWitherSkull, ...], [net.minecraft.client.settings.GameSettings, KeyBinding], [net.minecraft.client.texturepacks.TexturePackList, ITexturePack, TexturePackImplementation, ...], [net.minecraft.command.ICommandSender, ICommandManager, IAdminCommand, ...], [net.minecraft.crash.CrashReport, CrashReportCategory, CallableMinecraftVersion, ...], [net.minecraft.creativetab.CreativeTabs, CreativeTabBlock, CreativeTabDeco, ...], [net.minecraft.dispenser.IRegistry, IPosition, ILocation, ...], [net.minecraft.enchantment.Enchantment, EnchantmentProtection, EnchantmentOxygen, ...], [net.minecraft.entity.Entity, EntityLiving, IRangedAttackMob, ...], [net.minecraft.entity.ai.EntityAIBase, EntityAISwimming, EntityAIPanic, ...], [net.minecraft.entity.boss.IBossDisplayData, EntityWither, EntityDragon, ...], [net.minecraft.entity.effect.EntityWeatherEffect, EntityLightningBolt], [net.minecraft.entity.item.EntityItem, EntityXPOrb, EntityFallingSand, ...], [net.minecraft.entity.monster.EntityGolem, EntitySnowman, EntityIronGolem, ...], [net.minecraft.entity.passive.IAnimals, EntityAnimal, EntityPig, ...], [net.minecraft.entity.player.EntityPlayer, EntityPlayerMP, InventoryPlayer, ...], [net.minecraft.entity.projectile.EntityArrow, EntityThrowable, EntitySnowball, ...], [net.minecraft.inventory.IInventory, ICrafting, Container, ...], [net.minecraft.item.Item, ItemPotion, ItemTool, ...], [net.minecraft.item.crafting.CraftingManager, RecipesTools, IRecipe, ...], [net.minecraft.nbt.NBTBase, NBTTagCompound, NBTTagList, ...], [net.minecraft.network.INetworkManager, NetworkListenThread, MemoryConnection, ...], [net.minecraft.network.packet.Packet, Packet131MapData, Packet3Chat, ...], [net.minecraft.pathfinding.PathNavigate, PathFinder, Path, ...], [net.minecraft.potion.PotionHelper, Potion, PotionHealth], [net.minecraft.profiler.IPlayerUsage, PlayerUsageSnooper, Profiler, ...], [net.minecraft.server.ThreadMinecraftServer, ConvertingProgressUpdate], [net.minecraft.server.gui.IUpdatePlayerListBox], [net.minecraft.server.integrated.IntegratedServer, IntegratedPlayerList, IntegratedServerListenThread], [net.minecraft.server.management.ServerConfigurationManager, BanList, LowerStringMap, ...], [net.minecraft.stats.IStatStringFormat, StatFileWriter, StatList, ...], [net.minecraft.tileentity.TileEntity, TileEntityDispenser, TileEntityNote, ...], [net.minecraft.util.MinecraftError, ReportedException, MovementInput, ...], [net.minecraft.village.VillageCollection, VillageSiege], [net.minecraft.world.IBlockAccess, World, IWorldAccess, ...], [net.minecraft.world.biome.WorldChunkManager, WorldChunkManagerHell, BiomeCache, ...], [net.minecraft.world.chunk.IChunkProvider, Chunk, EmptyChunk, ...], [net.minecraft.world.chunk.storage.AnvilSaveConverter, AnvilSaveHandler, IChunkLoader, ...], [net.minecraft.world.gen.ChunkProviderServer, ChunkProviderGenerate, MapGenBase, ...], [net.minecraft.world.gen.feature.WorldGenerator, WorldGenBigTree, WorldGenTrees, ...], [net.minecraft.world.gen.layer.GenLayer, GenLayerIsland, GenLayerFuzzyZoom, ...], [net.minecraft.world.gen.structure.MapGenStructure, MapGenStronghold, StructureStart, ...], [net.minecraft.world.storage.ISaveFormat, MapData, SaveFormatOld, ...]&lt;br/&gt;
	IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63&lt;br/&gt;
	Profiler Position: N/A (disabled)&lt;br/&gt;
	Vec3 Pool Size: 6589 (368984 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used&lt;br/&gt;
	Player Count: 1 / 8; [EntityPlayerMP[&amp;#39;Player889&amp;#39;/27, l=&amp;#39;New World&amp;#39;, x=-222,24, y=64,00, z=99,72]]&lt;br/&gt;
	Type: Integrated Server (map_client.txt)&lt;br/&gt;
	Is Modded: Very likely; Jar signature invalidated</environment>
        <key id="20980">MC-8111</key>
            <summary>Crash on creating world</summary>
                <type id="1" iconUrl="https://bugs.mojang.com/secure/viewavatar?size=xsmall&amp;avatarId=18903&amp;avatarType=issuetype">Bug</type>
                                    <status id="5" iconUrl="https://bugs.mojang.com/images/icons/statuses/resolved.png" description="A resolution has been taken, and it is awaiting verification by reporter. From here issues are either reopened, or are closed.">Resolved</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="7">Invalid</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="angal">Antain Angal</reporter>
                        <labels>
                    </labels>
                <created>Tue, 22 Jan 2013 12:54:46 +0100</created>
                <updated>Mon, 14 Mar 2016 15:28:07 +0100</updated>
                            <resolved>Tue, 22 Jan 2013 13:10:41 +0100</resolved>
                                    <version>Minecraft 1.4.7</version>
                                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                            <comments>
                            <comment id="39056" author="cubethethird" created="Tue, 22 Jan 2013 13:10:41 +0100"  >&lt;p&gt;Please do not report issues for modded clients. If the issue persists in vanilla minecraft, then feel free to post a new issue ticket.&lt;/p&gt;</comment>
                    </comments>
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