Sens

If you mean inside the installer.jar those folders and files don't exist. At least I'm not finding them.

Just shows this if this is what you mean: Data assets/minecraft/models/item/bamboo_mosaic_slab.json Data assets/minecraft/models/item/turtle_helmet_quartz_trim.json Processor failed, invalid outputs: /home/aron/.minecraft/libraries/net/minecraft/client/1.20.1-20230612.114412/client-1.20.1-20230612.114412- slim.jar Expected: de86b035d2da0f78940796bb95c39a932ed84834 Actual: aea60124ca903ecbb2e825805e318f9d89ac867c /home/aron/.minecraft/libraries/net/minecraft/client/1.20.1-20230612.114412/client-1.20.1-20230612.114412- extra.jar Expected: 8c5a95cbce940cfdb304376ae9fea47968d02587 Actual: 76e87dbc119daed8dc1861c17160e0c4b6f34d2e There was an error during installation Also I gave the .jar file full permissions too.

I checked the hash like you said and it came back as OK each time, also may I ask what you mean by debug mode during installation?

I get these errors when trying to install any version (this ones for 47.3.33 for instance): Processor failed, invalid outputs: /home/user/.local/share/FreesmLauncher/instances/1.20.1/minecraft/libraries/net/minecraft/server/1.20.1-20230612.114412/server-1.20.1-20230612.114412-slim.jar Expected: 9e06bdd77ca6d95b2cced0bf372245f753eeb16a Actual: f1e5a0cc3c9f7c58f26524a43c5badc06ca0bac4 /home/user/.local/share/FreesmLauncher/instances/1.20.1/minecraft/libraries/net/minecraft/server/1.20.1-20230612.114412/server-1.20.1-20230612.114412-extra.jar Expected: 13522e3278befd103064d91a199451df4cd2633f Actual: eb1dafb7bee2ace5d55d90b65e73c2196b1991f3 I've tried sklauncher and freesm launcher and they throw the same error, tried installing it with the official forge installer too but same error. Also tried different versions of java: 17, 21, 24. Forge for previous versions install fine, I'm on Linux CachyOS.