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    <title>Mojang Studios Jira</title>
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    <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-1366] Minecraft crashes when you join a server you are already logged in on.</title>
                <link>https://bugs.mojang.com/browse/MC-1366</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;p&gt;When you are logged in on a server and start a second Minecraft session and join the same server, the first client crashes with (for me) following description:&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 has crashed!*      
      ----------------------      

Minecraft has stopped running because it encountered a problem; Unexpected error
This error has been saved to C:\Users\Meta\AppData\Roaming\.minecraft\crash-reports\crash-2012-10-30_20.45.01-client.txt &lt;span class=&quot;code-keyword&quot;&gt;for&lt;/span&gt; your convenience. Please include a copy of &lt;span class=&quot;code-keyword&quot;&gt;this&lt;/span&gt; file &lt;span class=&quot;code-keyword&quot;&gt;if&lt;/span&gt; you report &lt;span class=&quot;code-keyword&quot;&gt;this&lt;/span&gt; crash to anyone.



--- BEGIN ERROR REPORT 3af587c1 --------
Generated 30.10.12 20:45

- Minecraft Version: 1.4.2
- 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: 7923688680 bytes (7556 MB) / 8039104512 bytes (7666 MB) up to 8039104512 bytes (7666 MB)
- JVM Flags: 2 total; -Xms8000m -Xmx8000m
- AABB Pool Size: 10077 (564312 bytes; 0 MB) allocated, 1182 (66192 bytes; 0 MB) used
- LWJGL: 2.4.2
- OpenGL: GeForce GTX 570/PCIe/SSE2 GL version 4.2.0, NVIDIA Corporation
- Is Modded: Very likely
- Type: Client
- Texture Pack: Default
- Profiler Position: N/A (disabled)
- Vec3 Pool Size: ~ERROR~ NullPointerException: &lt;span class=&quot;code-keyword&quot;&gt;null&lt;/span&gt;

java.lang.NullPointerException
	at aud.b(SourceFile:256)
	at net.minecraft.client.Minecraft.a(SourceFile:433)
	at awr.a(SourceFile:484)
	at db.a(SourceFile:27)
	at bx.b(SourceFile:341)
	at awr.d(SourceFile:98)
	at awz.b(SourceFile:61)
	at net.minecraft.client.Minecraft.l(SourceFile:1282)
	at net.minecraft.client.Minecraft.J(SourceFile:582)
	at net.minecraft.client.Minecraft.run(SourceFile:534)
	at java.lang.&lt;span class=&quot;code-object&quot;&gt;Thread&lt;/span&gt;.run(Unknown Source)
--- END ERROR REPORT 1291c576 ----------&lt;/pre&gt;
&lt;/div&gt;&lt;/div&gt;

&lt;p&gt;&lt;b&gt;EDIT: THIS IS NOT A VANILLA ISSUE. I HAD OPTIFINE INSTALLED AND THAT SOMEHOW CAUSED THAT.&lt;/b&gt;&lt;/p&gt;</description>
                <environment></environment>
        <key id="12693">MC-1366</key>
            <summary>Minecraft crashes when you join a server you are already logged in on.</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="meta">Meta</reporter>
                        <labels>
                    </labels>
                <created>Tue, 30 Oct 2012 20:47:38 +0100</created>
                <updated>Sat, 9 Feb 2013 23:25:24 +0100</updated>
                            <resolved>Tue, 30 Oct 2012 21:22:13 +0100</resolved>
                                    <version>Minecraft 1.4.2</version>
                                                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                            <comments>
                            <comment id="15585" author="dinnerbone" created="Tue, 30 Oct 2012 21:22:13 +0100"  >&lt;p&gt;Invalid due to mod issue.&lt;/p&gt;</comment>
                            <comment id="15581" author="meta" created="Tue, 30 Oct 2012 21:13:59 +0100"  >&lt;p&gt;Oh yes, I forgot about that (have Optifine). With vanilla minecraft I get a message: &quot;You logged in from another location.&quot; (also this one has no translations on crowdin.net too)&lt;/p&gt;

&lt;p&gt;So that&apos;s no vanilla bug.&lt;br/&gt;
Please close.&lt;/p&gt;</comment>
                            <comment id="15577" author="selbram" created="Tue, 30 Oct 2012 21:02:56 +0100"  >&lt;p&gt;Also, in your crash report: Is Modded: Very likely&lt;/p&gt;

&lt;p&gt;This tracker is intended for vanilla minecraft clients and server. If you are using mods that invalidates the error report for us.&lt;/p&gt;

&lt;p&gt;If you can duplicate the error with an unmodded server and client it would be more valuable to the devs.&lt;/p&gt;</comment>
                            <comment id="15573" author="meta" created="Tue, 30 Oct 2012 20:54:13 +0100"  >&lt;p&gt;I know but it should not crash then but instead display a message or something.&lt;/p&gt;</comment>
                            <comment id="15568" author="selbram" created="Tue, 30 Oct 2012 20:51:28 +0100"  >&lt;p&gt;You cannot multiplay with a single account.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10102">
                    <name>Duplicate</name>
                                            <outwardlinks description="duplicates">
                                        <issuelink>
            <issuekey id="12402">MC-1102</issuekey>
        </issuelink>
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