https://htyp.org/mw/index.php?action=history&feed=atom&title=User%3AWoozle%2FMinecraft 2026-06-30T02:28:24Z Revision history for this page on the wiki MediaWiki 1.45.3 https://htyp.org/mw/index.php?title=User:Woozle/Minecraft&diff=25702&oldid=prev 2020-01-22T15:31:11Z

<p>Created page with &quot;==2020-01-22 Legacy Launcher issue== Trying to fix Harena&#039;s launcher... ===&quot;Duplicate key&quot; problem=== * https://www.minecraftforum.net/forums/support/java-edition-support/298...&quot;</p> <p><b>New page</b></p><div>==2020-01-22 Legacy Launcher issue==<br /> Trying to fix Harena&#039;s launcher...<br /> <br /> ===&quot;Duplicate key&quot; problem===<br /> * https://www.minecraftforum.net/forums/support/java-edition-support/2985630-minecraft-throws-duplicate-key-error<br /> ** https://bugs.mojang.com/browse/MCL-11993<br /> *** downloaded &quot;the updated version (1.6.93)&quot; https://launcher.mojang.com/v1/objects/eabbff5ff8e21250e33670924a0c5e38f47c840b/launcher.jar<br /> <br /> This resulted in a loading attempt where the progress bar got all the way to the end (right) before the next error happened:<br /> ===&quot;Option UseConcMarkSweepGC was deprecated&quot; error===<br /> &lt;pre&gt;OpenJDK 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.<br /> Unrecognized VM option &#039;CMSIncrementalMode&#039;<br /> Error: Could not create the Java Virtual Machine.<br /> Error: A fatal exception has occurred. Program will exit.&lt;/pre&gt;<br /> * [https://askubuntu.com/questions/1028595/jdk-crash-when-attempting-to-run-minecraft-on-ubuntu-18-04/1033306 This page] suggests modifying JVM arguments:<br /> ** H&#039;s old settings: &lt;code&gt;-Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M&lt;/code&gt;<br /> ** Poster&#039;s old settings: &lt;code&gt;-Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M&lt;/code&gt;<br /> ** Poster&#039;s new settings: &lt;code&gt;-Xmx1G -XX:+UseConcMarkSweepGC -XX:-UseAdaptiveSizePolicy -Xmn128M&lt;/code&gt;</div>

Woozle