OttersMeep

Figured it out, thanks for the help @diesieben07, I really appreciate it.

OK, I am good with installing anyways. Just open the .dmg or .pkg and I'm done.

OK, but I don't know how to run an older version, Apple downloaded this for me. What version should I run, and where should I download it?

I'm using the official start text in Terminal: java -Xmx1024M -Xms1024M -jar minecraft_server.1.16.4.jar I tried running the forge jar, but it doesn't start the server, from the command line or finder. I don't know if you know this yet or not from the applications I'm running, but I'm on MacOS Catalina

I uploaded everything in the logs folder, just in case it helps. Also, I can't run the forge server, it says Illegal Operation 2021-01-06-1.log.gz 2021-01-06-2.log.gz debug.log latest.log

I can place vanilla blocks, but when I place mod blocks, it disappears. I'm using MC 1.16.4 (current). The mods are loaded, but I can't place any blocks. If it helps, I'm trying to load SecurityCraft. The block appears, but after 1 tick, it's gone. (I timed it, exactly one tick)

OK, also, thanks for replying so fast!

I can't setup a forge server, when I do, it loads correctly, but I can't place blocks from mods anywhere.