meatbeatca

That solved it! Thank you SO much, Danebi. My son will be thrilled in the morning. He's been sad without access to some of his worlds for a few weeks.

OH, I see the mods folder. Just delete that mod file?

Is that a mod I should remove? ... and how do I do that?

Ah sorry, thanks! Here's the debug log (I think!) https://pastebin.com/401BxnDd

Oh yeah! Here's the new log. https://pastebin.com/q8wc2C5y

Hmmm. I think it went a little bit further but still ended in the exit code 0.

Suddenly Minecraft Forge gave me an exit code 0 every time I try to launch. Can still launch vanilla Minecraft. Allocated more RAM (4GB) and upgraded to latest version of Forge and Minecraft, which hasn't helped. I'm generally more of a Mac user, so feeling particularly short on ideas or solutions. Here's a link to the log. https://pastebin.com/nc3buJnr