Delete all default JVM argument of the MYM launcherĨ.D:/Programs/MultiMC/instances/GT New Horizons (2.1.2.0)/minecraftĬ:/Program Files/Java/jdk1.8.0_172/bin/javaw.exe Try to use the default JVM argument of the MYM launcherħ. Following some method posted in forum like Done - Game Won't Open | MineYourMind CommunityĦ. Update to latest JAVA (Now version: 1.8.0_212 / x86_64 ) My PC is running X64Ĥ.5 Ensure only one JVM (the 1.8.0_212 / x86_64 ) run on my pcĥ. Update to the latest driver of Nvidia (Now version: 460.64)Ĥ. Uninstall and reinstall all java, runtime environmentģ. Uninstall and reinstall minecraft(including start the Minecraft original launcher version 1.14 and 1.6.4 ), mym launcher(download from official website), and all the modpack folder (incluing mym and curse )Ģ. Crashed on starting crash landing modpack via MYM launcherġ.