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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>
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<item>
            <title>[MC-5171] World blocks back</title>
                <link>https://bugs.mojang.com/browse/MC-5171</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;p&gt;Ok, I am really mad. This is what happened.&lt;/p&gt;

&lt;p&gt;I was playing my SP world. I was putting down doors when the game froze. I thought it might be lag, so I waited. Then it said minecraft crashed. I logged back in and got on my world. I was inside of stone. I soon found out all the blocks I mined were back. Some of my blocks were missing, but I found my pig in a block. No pics because I can only take pics on Multiplayer. Here is the crash:&lt;/p&gt;

&lt;p&gt;---- Minecraft Crash Report ----&lt;br/&gt;
// I&apos;m sorry, Dave.&lt;/p&gt;

&lt;p&gt;Time: 12/21/12 3:49 PM&lt;br/&gt;
Description: Ticking memory connection&lt;/p&gt;

&lt;p&gt;java.lang.NullPointerException&lt;br/&gt;
	at ur.f(SourceFile:129)&lt;br/&gt;
	at ur.h(SourceFile:143)&lt;br/&gt;
	at qw.a(SourceFile:219)&lt;br/&gt;
	at px.c_(SourceFile:189)&lt;br/&gt;
	at qx.r(SourceFile:388)&lt;br/&gt;
	at qx.c(SourceFile:380)&lt;br/&gt;
	at md.j_(SourceFile:540)&lt;br/&gt;
	at qx.j_(SourceFile:200)&lt;br/&gt;
	at iq.g(SourceFile:175)&lt;br/&gt;
	at iv.a(SourceFile:199)&lt;br/&gt;
	at eb.a(SourceFile:136)&lt;br/&gt;
	at cf.b(SourceFile:55)&lt;br/&gt;
	at iv.d(SourceFile:57)&lt;br/&gt;
	at iw.b(SourceFile:39)&lt;br/&gt;
	at bec.b(SourceFile:84)&lt;br/&gt;
	at net.minecraft.server.MinecraftServer.r(SourceFile:762)&lt;br/&gt;
	at net.minecraft.server.MinecraftServer.q(SourceFile:679)&lt;br/&gt;
	at bdz.q(SourceFile:117)&lt;br/&gt;
	at net.minecraft.server.MinecraftServer.run(SourceFile:613)&lt;br/&gt;
	at fy.run(SourceFile:849)&lt;/p&gt;


&lt;p&gt;A detailed walkthrough of the error, its code path and all known details is as follows:&lt;br/&gt;
---------------------------------------------------------------------------------------&lt;/p&gt;

&lt;p&gt;&amp;#8211; System Details &amp;#8211;&lt;br/&gt;
Details:&lt;br/&gt;
	Minecraft Version: 1.4.6&lt;br/&gt;
	Operating System: Windows Vista (x86) version 6.0&lt;br/&gt;
	Java Version: 1.7.0_09, Oracle Corporation&lt;br/&gt;
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation&lt;br/&gt;
	Memory: 353325376 bytes (336 MB) / 519110656 bytes (495 MB) up to 1037959168 bytes (989 MB)&lt;br/&gt;
	JVM Flags: 2 total; -Xms512m -Xmx1024m&lt;br/&gt;
	AABB Pool Size: 1084 (60704 bytes; 0 MB) allocated, 827 (46312 bytes; 0 MB) used&lt;br/&gt;
	Suspicious classes: No suspicious classes found.&lt;br/&gt;
	IntCache: cache: 0, tcache: 0, allocated: 1, tallocated: 63&lt;br/&gt;
	Profiler Position: N/A (disabled)&lt;br/&gt;
	Vec3 Pool Size: 3269 (183064 bytes; 0 MB) allocated, 1734 (97104 bytes; 0 MB) used&lt;br/&gt;
	Player Count: 1 / 8; [iq&lt;span class=&quot;error&quot;&gt;&amp;#91;&amp;#39;rigbymad12&amp;#39;/79, l=&amp;#39;Rigby&amp;#39;s World&amp;#39;, x=-261.14, y=53.00, z=-222.51&amp;#93;&lt;/span&gt;]&lt;br/&gt;
	Type: Integrated Server (map_client.txt)&lt;br/&gt;
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.&lt;/p&gt;</description>
                <environment>Windows Vista</environment>
        <key id="17744">MC-5171</key>
            <summary>World blocks back</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="rigbymad12">rigby</reporter>
                        <labels>
                            <label>crash</label>
                    </labels>
                <created>Sat, 22 Dec 2012 01:05:22 +0100</created>
                <updated>Tue, 5 May 2015 12:35:39 +0200</updated>
                            <resolved>Sat, 22 Dec 2012 01:13:54 +0100</resolved>
                                    <version>Minecraft 1.4.6</version>
                    <version>Minecraft 1.4.7</version>
                                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                            <comments>
                            <comment id="30021" author="bljat" created="Sat, 22 Dec 2012 01:13:54 +0100"  >&lt;p&gt;Crash is duplicate of &lt;a href=&quot;https://bugs.mojang.com/browse/MC-2711&quot; title=&quot;Jukebox crashes when breaking with no record inside&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-2711&quot;&gt;&lt;del&gt;MC-2711&lt;/del&gt;&lt;/a&gt;.&lt;br/&gt;
Rebuilded chunk is &lt;a href=&quot;https://bugs.mojang.com/browse/MC-3739&quot; title=&quot;Chunks are clearing and rebuilding them selfs&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-3739&quot;&gt;&lt;del&gt;MC-3739&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10102">
                    <name>Duplicate</name>
                                            <outwardlinks description="duplicates">
                                        <issuelink>
            <issuekey id="14302">MC-2548</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="14479">MC-2711</issuekey>
        </issuelink>
                            </outwardlinks>
                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="22801">MC-9240</issuekey>
        </issuelink>
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