DaemonUmbra

If this is a client: Please provide launcher_log.txt from your .minecraft folder If this is a server: Please provide the command you are using to launch the server

Xander's solution is correct, however you should be getting the file from the official source.

Don't rehost mods

This suggests your vanilla minecraft jar is corrupt, since you're using Twitch try repairing the instance

@Xander402 Don't rehost files, especially when the error gives you a valid official URL

1.7.10 is no longer supported on this forum due to its age. Please update to a modern version of Minecraft to receive support.

An EnderStorage from 1.7.10 lines up with the error I was seeing, but Forge gave no indication at all that it was loading two different EnderStorage versions

I'm not sure I understand. Download the installer for your desired version from https://files.minecraftforge.net, make sure you have Java installed, and run the installer.

I hope you have a back up, because it's looking like the world is corrupted

DM me your copy of EnderStorage

Mojang doesn't use @Deprecated properly. In this case it means "call the BlockState version of this method rather than the Block version".

You provided a tiny, tiny shard of what I'm asking for, I need the whole thing.

The copies of EnderStorage that I'm getting from Curse and the Dev's own site are not matching the error coming out of your game. Again, where did you get your mods?

Are you looking to make your own furnace or retexture the default?

Please read the logs section of my signature below and provide the appropriate log in the appropriate manner.

.minecraft/logs There’s a link in my signature to the Minecraft wiki with info about finding .minecraft

This looks like an issue with either Quark or AutoRegLib. Make sure you’re using the most recent version of both and if you are, report it to the author.

Please provide debug.log using one of the sites listed in the “logs“ section of my signature.

1.7.10 is no longer supported on this forum due to its age. Please update to a modern version of Minecraft to receive support.

Try deleting your whole config folder

Please don't hijack other people's threads. If you have an issue make your own thread.

From this error either you're lying to me or a mod dev is lying to Curse. Please provide your debug.log