Updating Java installs due to july 18 security vulnerability broke the java arguments for MultiMC modpack installs.

[eggyplantsu]

lwjgl3ify: 2.0.9 GTNH modpack version: 2.6.1 MultiMC: 0.7.0-3863 Java 21.0.4

-Djava.system.class.loader=com.gtnewhorizons.retrofuturabootstrap.RfbSystemClassLoader "removing this line makes the java test run fine, but this line is needed to run lwjgl3ify or the modpack will crash"
--add-opens java.base/java.util.concurrent.atomics=ALL-UNNAMED "gives warning that package is not in java.base"

GTNH discord announcement of said vulnerability
https://discord.com/channels/181078474394566657/252440750174765057/1263537325426872350

[GesundesWasser]

Same here.