PoysonCyanide

I got it working on that version, thank you. Unfortunately now I'll have to keep installing Forge versions to switch between the version you mentioned when I want to use the texture pack and a different version I need for Minecolonies.

https://gist.github.com/PoysonCyanide/afa9c00bc52dd1c74f890ad5c9d13aa6 Here's the debug.log

I would post the debug log but it's too big to just paste it into a comment. I tried and got a page error after several minutes of waiting for the text to load. And upon trying to put it on pastebin it didnt allow me to and said "You have exceeded the maximum size of 512 kilobytes per Paste" After searching the debug.log myself however I noticed there are 1144 instances of "Caused by: java.lang.IllegalArgumentException: Invalid texture size: 0x0" so I'm guessing something is having issue with reading the texture packs files? IDK if Forge does that but like I mentioned the texture pack works perfectly fine in vanilla Minecraft.

This 8x texture pack: https://texture-packs.com/resourcepack/f8thful/ only displays varying shades of checkered boxes but when testing what was causing the issue I found that no mods are causing it like I initially thought. The texture pack works completely fine in vanilla Minecraft without anything installed. Only when I use Forge does it break. Image of error: https://imgur.com/a/XDX5IKw