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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-4560] Items in equipment slot / Crashes if CanPickUpLoot is set to 1 in level.dat/player.dat files</title>
                <link>https://bugs.mojang.com/browse/MC-4560</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;p&gt;By changing the value of CanPickUpLoot from 0 to 1 in level.dat or player.dat files, items will be picked up and placed into the equipment slot:&lt;br/&gt;
When dropping an an item or tool it will equip to your boots slot.&lt;br/&gt;
When dropping an Chestplate it will go to your helmet slot.&lt;br/&gt;
When dropping an helmet, the game crashes... When trying to pick the helmet back up, the game crashes again...(see attached crash log)&lt;br/&gt;
When dropping an pair of leggings, it will go to your Chestplate slot.&lt;br/&gt;
When dropping an pair of boots, it will go to your Leggings slot.&lt;/p&gt;



&lt;p&gt;What I expected to happen was:&lt;br/&gt;
The item that I dropped would be dropped.&lt;/p&gt;

&lt;p&gt;What actually happend was:&lt;br/&gt;
It item immediately goes to another an equipment slot in my inventory.&lt;br/&gt;
It also overwrites the existing item on the equipment slot.&lt;/p&gt;

&lt;p&gt;Steps to Reproduce:&lt;br/&gt;
Drop an item in Survival mode.&lt;/p&gt;

&lt;p&gt;&lt;font color=&quot;red&quot;&gt; &lt;br/&gt;
&lt;b&gt;Summary&lt;/b&gt;&lt;/font&gt; &lt;br/&gt;
This happens when you use Bukkit map to Vanilla SMP server, and this is because of incompatibility between unmodded 12w02b and bukkit. The bukkit sets &quot;CanPickUpLoot&quot; NBT Tag&apos;s value to 1 (not 0 the default), and 12w02b doesn&apos;t support that, so this occurs. &lt;/p&gt;

&lt;p&gt;&lt;font color=&quot;red&quot;&gt; &lt;br/&gt;
&lt;b&gt;How to fix&lt;/b&gt;&lt;/font&gt; &lt;br/&gt;
Using NBT-Edit I compared my Level.dat file with a new fresh one.&lt;br/&gt;
In NBT-Edit the Byte &quot;CanPickUpLoot&quot; was 1, instead of the default 0. (In NBT-Edit: Data &amp;gt; Player &amp;gt; CanPickUpLoot)&lt;br/&gt;
For multiplayer use the player.dat files&lt;/p&gt;</description>
                <environment>OS: Windows 8 Professional x64&lt;br/&gt;
RAM: 6GB&lt;br/&gt;
CPU: Intel(R) Core i5 750&lt;br/&gt;
Java: 7 update 9&lt;br/&gt;
Mods: No, because it is 12w50a...</environment>
        <key id="17088">MC-4560</key>
            <summary>Items in equipment slot / Crashes if CanPickUpLoot is set to 1 in level.dat/player.dat files</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="1">Fixed</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="dyon123">Is Prive</reporter>
                        <labels>
                    </labels>
                <created>Thu, 13 Dec 2012 16:40:15 +0100</created>
                <updated>Sat, 23 Mar 2013 10:43:21 +0100</updated>
                            <resolved>Sun, 17 Mar 2013 22:34:32 +0100</resolved>
                                    <version>Snapshot 12w50a</version>
                    <version>Minecraft 1.4.6</version>
                    <version>Minecraft 1.4.7</version>
                    <version>Snapshot 13w01a</version>
                    <version>Snapshot 13w01b</version>
                    <version>Snapshot 13w02b</version>
                    <version>Snapshot 13w04a</version>
                    <version>Snapshot 13w05b</version>
                    <version>Snapshot 13w06a</version>
                    <version>Snapshot 13w07a</version>
                    <version>Snapshot 13w09a</version>
                                    <fixVersion>Minecraft 1.5</fixVersion>
                                                        <votes>5</votes>
                                    <watches>2</watches>
                                                                            <comments>
                            <comment id="54748" author="bljat" created="Sun, 17 Mar 2013 22:34:32 +0100"  >&lt;p&gt;CanPickUpLoot value resets itself to 0 now every time you load the world.&lt;/p&gt;</comment>
                            <comment id="47311" author="lexmanos" created="Sun, 24 Feb 2013 00:54:13 +0100"  >&lt;p&gt;Sorry, thought you meant &quot;I could not find a instance of that entry in a vanilla leval.dat&quot; not &quot;It&apos;s there, but I suggest it not be&quot;&lt;/p&gt;</comment>
                            <comment id="47293" author="banana478" created="Sat, 23 Feb 2013 23:57:04 +0100"  >&lt;p&gt;That&apos;s what I just said.&lt;/p&gt;</comment>
                            <comment id="47248" author="lexmanos" created="Sat, 23 Feb 2013 19:42:23 +0100"  >&lt;p&gt;Actually, there is in single player worlds, as the level.dat contains your player&apos;s entity as well. And this value is stored on all EntityLiving&lt;br/&gt;
Personally, I believe that Players should just have this functionality disabled as they are controlled by a player and shouldn&apos;t have items swapped without them wanting it.&lt;/p&gt;</comment>
                            <comment id="44844" author="banana478" created="Sat, 9 Feb 2013 21:35:01 +0100"  >&lt;p&gt;There shouldn&apos;t even be a &quot;CanPickUpLoot&quot; option in level.dat to mess with.&lt;/p&gt;</comment>
                            <comment id="39863" author="bljat" created="Fri, 25 Jan 2013 22:24:48 +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: Ticking memory connection
java.lang.ArrayIndexOutOfBoundsException: 4
	at qx.c(SourceFile:1522)
	at md.c(SourceFile:1214)
	at qx.c(SourceFile:357)
	at md.j_(SourceFile:540)&lt;/pre&gt;
&lt;/div&gt;&lt;/div&gt;</comment>
                            <comment id="35939" author="kumasasa" created="Sat, 12 Jan 2013 07:42:30 +0100"  >&lt;p&gt;Nice summary, I&apos;ve put that in the description.&lt;/p&gt;</comment>
                            <comment id="35931" author="jinoh" created="Sat, 12 Jan 2013 06:46:07 +0100"  >&lt;p&gt;Summary : This happens when you use Bukkit map to Vanilla SMP server, and this is because of incompatibility between unmodded 12w02b and bukkit. The bukkit sets &quot;CanPickUpLoot&quot; NBT Tag&apos;s value to 1 (not 0 the default), and 12w02b doesn&apos;t support that, so this occurs. (sorry for my bad english if i used it)&lt;/p&gt;</comment>
                            <comment id="33631" author="bljat" created="Sun, 6 Jan 2013 14:59:01 +0100"  >&lt;p&gt;Confirmed, attached clean crash report.&lt;/p&gt;</comment>
                            <comment id="33596" author="kumasasa" created="Sun, 6 Jan 2013 13:12:05 +0100"  >&lt;p&gt;Reopened, since &lt;a href=&quot;https://bugs.mojang.com/browse/MC-6380&quot; title=&quot;Game Crashing Bug&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-6380&quot;&gt;&lt;del&gt;MC-6380&lt;/del&gt;&lt;/a&gt; and &lt;a href=&quot;https://bugs.mojang.com/browse/MC-5109&quot; title=&quot;Internal Server Error&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-5109&quot;&gt;&lt;del&gt;MC-5109&lt;/del&gt;&lt;/a&gt; are not modded.&lt;/p&gt;</comment>
                            <comment id="29753" author="bljat" created="Thu, 20 Dec 2012 23:33:46 +0100"  >&lt;p&gt;Added how to fix section to description.&lt;/p&gt;</comment>
                            <comment id="29752" author="the_comet" created="Thu, 20 Dec 2012 23:30:10 +0100"  >&lt;p&gt;For me this happens in Multiplayer, and when I pick up seeds it equips only 1 and then destroys the rest and all blocks are picked up and then destroyed when there is something equiped in my boots armour slot&lt;/p&gt;</comment>
                            <comment id="29640" author="dyon123" created="Thu, 20 Dec 2012 16:04:20 +0100"  >&lt;p&gt;Try editing the (playername).dat in the player folder instead of the level.dat when running a server.&lt;/p&gt;</comment>
                            <comment id="29631" author="bljat" created="Thu, 20 Dec 2012 15:43:35 +0100"  >&lt;p&gt;You have modified level.dat the same way as the poster of this ticket, please follow the steps he provided in his comment to fix your issue.&lt;/p&gt;</comment>
                            <comment id="29567" author="digiplayw8" created="Thu, 20 Dec 2012 04:38:23 +0100"  >&lt;p&gt;my bug report with the same thing got closed because of this one already existing.....i used the search feature and this never once came up...i kept getting the same results that had nothing to do with my issue......also, @Tails....the problem is happening to me on a vanilla server, and I have no mods installed personally.&lt;/p&gt;</comment>
                            <comment id="28095" author="dyon123" created="Thu, 13 Dec 2012 17:23:34 +0100"  >&lt;p&gt;I found the problem myself and fixed it.&lt;br/&gt;
Using NBT-Edit I compared my Level.dat file with a new fresh one.&lt;br/&gt;
In NBT-Edit the Byte &quot;CanPickUpLoot&quot; was 1, instead of the default 0. (In NBT-Edit: Data &amp;gt; Player &amp;gt; CanPickUpLoot)&lt;br/&gt;
This is probably caused by moving my world from Bukkit to Normal Vanilla Singleplayer Minecraft.&lt;br/&gt;
Which is weird in my opinion. Thanks anyways. &lt;img class=&quot;emoticon&quot; src=&quot;https://bugs.mojang.com/images/icons/emoticons/wink.png&quot; height=&quot;16&quot; width=&quot;16&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/p&gt;</comment>
                            <comment id="28086" author="bljat" created="Thu, 13 Dec 2012 17:09:21 +0100"  >&lt;p&gt;1. Cannot reproduce your issue in vanilla.&lt;br/&gt;
2. &lt;a href=&quot;https://bugs.mojang.com/browse/MC-4560&quot; title=&quot;Items in equipment slot / Crashes if CanPickUpLoot is set to 1 in level.dat/player.dat files&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-4560&quot;&gt;&lt;del&gt;MC-4560&lt;/del&gt;&lt;/a&gt; has a perfectly fine crash report - meaning you have some kind of mods/plugins installed.&lt;/p&gt;</comment>
                            <comment id="28081" author="dyon123" created="Thu, 13 Dec 2012 16:55:01 +0100"  >&lt;p&gt;Since when are there mods for 12w50a?&lt;br/&gt;
Edit: I do not have any mods installed...&lt;br/&gt;
Edit 2: The sentence &quot;Is Modded: Very likely; Jar signature invalidated&quot; is probably becuase of the snapshot.&lt;/p&gt;</comment>
                            <comment id="28079" author="bljat" created="Thu, 13 Dec 2012 16:50:58 +0100"  >&lt;p&gt;This ticket is invalid as it relates to a modded or 3rd party client/server.&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;Any non-standard client/server build needs to be taken up with the appropriate team, not Mojang.&lt;/li&gt;
	&lt;li&gt;Any plugin issues need to be addressed to the plugin creator.&lt;/li&gt;
	&lt;li&gt;This site is for addressing issues related to the base unmodded MineCraft.&lt;/li&gt;
&lt;/ul&gt;
</comment>
                            <comment id="28078" author="dyon123" created="Thu, 13 Dec 2012 16:48:28 +0100"  >&lt;p&gt;Crash report when trying to pickup an enchanted helmet.&lt;/p&gt;</comment>
                    </comments>
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                                        <issuelink>
            <issuekey id="17944">MC-5345</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="18126">MC-5505</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="18462">MC-5810</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="18500">MC-5847</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="18607">MC-5950</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="18727">MC-6067</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="18908">MC-6243</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="19050">MC-6380</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="19611">MC-6838</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="19677">MC-6902</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="19966">MC-7187</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="20093">MC-7310</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="20202">MC-7415</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="20408">MC-7601</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="20421">MC-7614</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="20720">MC-7902</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="21168">MC-8250</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="21228">MC-8310</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="21291">MC-8371</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="21304">MC-8383</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="21338">MC-8415</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="21380">MC-8454</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="21400">MC-8464</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="21419">MC-8482</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="21437">MC-8500</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="21441">MC-8503</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="21543">MC-8590</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="21567">MC-8608</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="21661">MC-8697</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="22343">MC-8967</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="22492">MC-9049</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="22727">MC-9183</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="22960">MC-9370</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="23115">MC-9502</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="23436">MC-9701</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="23491">MC-9749</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="23510">MC-9767</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="24282">MC-10334</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="24859">MC-10879</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="25513">MC-11381</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="17265">MC-4734</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="17540">MC-4982</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="17595">MC-5035</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="17654">MC-5087</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="17677">MC-5109</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="17678">MC-5110</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="17705">MC-5136</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="17728">MC-5155</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="17733">MC-5160</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="17749">MC-5176</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="17775">MC-5201</issuekey>
        </issuelink>
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                            <attachment id="17395" name="crash-2013-01-06_14.56.50-server.txt" size="1788" author="bljat" created="Sun, 6 Jan 2013 14:59:01 +0100"/>
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