I am trying to add libraries to the minecraft runtime using the Jar-in-jar method. The jar files are added into the "META-INF/libraries/" folder in the compile jar. The jars extract to "run/mods/1.12.2". The latest.log contains these lines: I have tried adding the {entry}.meta in src/main/resources/(diesieben07), META-INF/libraries/(Forge Documentation), and not including the file. All methods result the same. Here is the current build.gradle file