Larian Studios Forums Divinity - Original Sin Divinity Original Sin - Mods Publishing a Mod to Steam Workshop

Just to eliminate one possiblity:

Do you have newly-made .pak files for your mod in /_/Documents/Larian Studios/Divinity Original Sin/Mods ..?

And! Are there two .pak files for your mod there, one named with a '_1' suffix, both together totaling around 1.3GB?

Hopefully the answer to these questions is no.