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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-817] Game Crash when traveling through end portal after updating to 1.4.2 after killing ender dragon in previous ver of game</title>
                <link>https://bugs.mojang.com/browse/MC-817</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;p&gt;killed the Ender Dragon in a previous version(one before 1.4.2)&amp;amp; finished game.&lt;br/&gt;
updated game to current ver,(1.4.2)&lt;br/&gt;
then traveled to end game portal &amp;amp; went through it&lt;br/&gt;
game crashed &amp;amp; crashes every time I try to load map to play.&lt;br/&gt;
Have attached the error report&lt;br/&gt;
Cheers&lt;/p&gt;</description>
                <environment>Windows 7 Pro x64 SP1, java ver 6 update 22 (build 1.6.0_22-b04)</environment>
        <key id="12097">MC-817</key>
            <summary>Game Crash when traveling through end portal after updating to 1.4.2 after killing ender dragon in previous ver of game</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="3">Duplicate</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="bad_karma001">Andrew Broussard</reporter>
                        <labels>
                    </labels>
                <created>Sat, 27 Oct 2012 01:10:10 +0200</created>
                <updated>Sun, 3 May 2015 06:24:43 +0200</updated>
                            <resolved>Sat, 1 Dec 2012 09:02:20 +0100</resolved>
                                    <version>Minecraft 1.4.2</version>
                    <version>Minecraft 1.4.5</version>
                                                                        <votes>1</votes>
                                    <watches>2</watches>
                                                                            <comments>
                            <comment id="26162" author="steveyjoe" created="Sun, 2 Dec 2012 03:20:19 +0100"  >&lt;p&gt;Sure Kumasasa, here it is:&lt;/p&gt;

&lt;div class=&quot;code panel&quot; style=&quot;border-width: 1px;&quot;&gt;&lt;div class=&quot;codeContent panelContent&quot;&gt;
&lt;pre class=&quot;code-java&quot;&gt;---- Minecraft Crash Report ----
&lt;span class=&quot;code-comment&quot;&gt;// You should &lt;span class=&quot;code-keyword&quot;&gt;try&lt;/span&gt; our sister game, Minceraft!
&lt;/span&gt;
Time: 12/1/12 9:16 PM
Description: Ticking entity

java.lang.IllegalStateException: Entity is already tracked!
	at ii.a(SourceFile:72)
	at ii.a(SourceFile:50)
	at ij.a(SourceFile:24)
	at xv.a(SourceFile:842)
	at in.a(SourceFile:581)
	at xv.d(SourceFile:834)
	at gm.a(SourceFile:369)
	at lq.b(SourceFile:1492)
	at px.b(SourceFile:201)
	at amg.a(SourceFile:62)
	at lq.D(SourceFile:652)
	at lq.d(SourceFile:615)
	at px.j_(SourceFile:67)
	at xv.a(SourceFile:1317)
	at in.a(SourceFile:451)
	at xv.g(SourceFile:1296)
	at xv.h(SourceFile:1195)
	at in.h(SourceFile:363)
	at net.minecraft.server.MinecraftServer.r(SourceFile:751)
	at net.minecraft.server.MinecraftServer.q(SourceFile:686)
	at bdo.q(SourceFile:117)
	at net.minecraft.server.MinecraftServer.run(SourceFile:620)
	at fy.run(SourceFile:856)


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

-- Head --
Stacktrace:
	at ii.a(SourceFile:72)
	at ii.a(SourceFile:50)
	at ij.a(SourceFile:24)
	at xv.a(SourceFile:842)
	at in.a(SourceFile:581)
	at xv.d(SourceFile:834)
	at gm.a(SourceFile:369)
	at lq.b(SourceFile:1492)
	at px.b(SourceFile:201)
	at amg.a(SourceFile:62)
	at lq.D(SourceFile:652)
	at lq.d(SourceFile:615)
	at px.j_(SourceFile:67)
	at xv.a(SourceFile:1317)
	at in.a(SourceFile:451)
	at xv.g(SourceFile:1296)

-- Entity being ticked --
Details:
	Entity Type: Item (px)
	Entity ID: 114
	Name: item.tile.dirt
	Exact location: 100.00, 50.13, 0.00
	Block location: World: (100,50,0), Chunk: (at 4,3,0 in 6,0; contains blocks 96,0,0 to 111,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Momentum: -0.00, -0.17, -0.00
Stacktrace:
	at xv.h(SourceFile:1195)
	at in.h(SourceFile:363)

-- Affected level --
Details:
	Level name: Isle Creepis
	All players: 1 total; [iq[&lt;span class=&quot;code-quote&quot;&gt;&apos;Knightstephen141&apos;&lt;/span&gt;/77, l=&lt;span class=&quot;code-quote&quot;&gt;&apos;Isle Creepis&apos;&lt;/span&gt;, x=100.00, y=49.00, z=0.00]]
	Chunk stats: ServerChunkCache: 441 Drop: 0
	Level seed: 7539544101188858510
	Level generator: ID 00 - &lt;span class=&quot;code-keyword&quot;&gt;default&lt;/span&gt;, ver 1. Features enabled: &lt;span class=&quot;code-keyword&quot;&gt;false&lt;/span&gt;
	Level generator options: 
	Level spawn location: World: (0,0,0), Chunk: (at 0,0,0 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 0 game time, 0 day time
	Level dimension: 0
	Level storage version: 0x00000 - Unknown?
	Level weather: Rain time: 0 (now: &lt;span class=&quot;code-keyword&quot;&gt;false&lt;/span&gt;), thunder time: 0 (now: &lt;span class=&quot;code-keyword&quot;&gt;false&lt;/span&gt;)
	Level game mode: ~~ERROR~~ NullPointerException: &lt;span class=&quot;code-keyword&quot;&gt;null&lt;/span&gt;
Stacktrace:
	at net.minecraft.server.MinecraftServer.r(SourceFile:751)
	at net.minecraft.server.MinecraftServer.q(SourceFile:686)
	at bdo.q(SourceFile:117)
	at net.minecraft.server.MinecraftServer.run(SourceFile:620)
	at fy.run(SourceFile:856)

-- &lt;span class=&quot;code-object&quot;&gt;System&lt;/span&gt; Details --
Details:
	Minecraft Version: 1.4.5
	Operating &lt;span class=&quot;code-object&quot;&gt;System&lt;/span&gt;: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_09, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 414369304 bytes (395 MB) / 514523136 bytes (490 MB) up to 954466304 bytes (910 MB)
	JVM Flags: 2 total; -Xms512m -Xmx1024m
	AABB Pool Size: 1301 (72856 bytes; 0 MB) allocated, 1301 (72856 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 1, tallocated: 63
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 107 (5992 bytes; 0 MB) allocated, 107 (5992 bytes; 0 MB) used
	Player Count: 1 / 8; [iq[&lt;span class=&quot;code-quote&quot;&gt;&apos;Knightstephen141&apos;&lt;/span&gt;/77, l=&lt;span class=&quot;code-quote&quot;&gt;&apos;Isle Creepis&apos;&lt;/span&gt;, x=100.00, y=49.00, z=0.00]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.
&lt;/pre&gt;
&lt;/div&gt;&lt;/div&gt;</comment>
                            <comment id="26048" author="kumasasa" created="Sat, 1 Dec 2012 09:08:10 +0100"  >&lt;p&gt;Stephen, thanks for the update.&lt;br/&gt;
Yet discovered that this ticket was a duplicate of &lt;a href=&quot;https://bugs.mojang.com/browse/MC-502&quot; title=&quot;IllegalStateException::Entity is already tracked!&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-502&quot;&gt;&lt;del&gt;MC-502&lt;/del&gt;&lt;/a&gt; , can you please attach there a crash report of version 1.4.5 ?&lt;/p&gt;</comment>
                            <comment id="26045" author="kumasasa" created="Sat, 1 Dec 2012 09:00:39 +0100"  >&lt;p&gt;Note:&lt;/p&gt;
&lt;div class=&quot;code panel&quot; style=&quot;border-width: 1px;&quot;&gt;&lt;div class=&quot;codeContent panelContent&quot;&gt;
&lt;pre class=&quot;code-java&quot;&gt;Description: Exception in server tick loop
java.lang.IllegalStateException: Entity is already tracked!
	at hz.a(SourceFile:67)
&lt;/pre&gt;
&lt;/div&gt;&lt;/div&gt;</comment>
                            <comment id="26036" author="steveyjoe" created="Sat, 1 Dec 2012 06:11:49 +0100"  >&lt;p&gt;As far as I know it is still a problem, cuz my world still crashes when I load it.&lt;/p&gt;</comment>
                            <comment id="25945" author="bljat" created="Fri, 30 Nov 2012 23:07:27 +0100"  >&lt;p&gt;Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10102">
                    <name>Duplicate</name>
                                            <outwardlinks description="duplicates">
                                        <issuelink>
            <issuekey id="11769">MC-502</issuekey>
        </issuelink>
                            </outwardlinks>
                                                        </issuelinktype>
                    </issuelinks>
                <attachments>
                            <attachment id="11102" name="crash-2012-10-26_23.23.07-server.txt" size="2519" author="bad_karma001" created="Sat, 27 Oct 2012 01:10:10 +0200"/>
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