For whatever reason, localization works perfectly in Eclipse, but when I compile my mod with Gradle and attempt to use it, nothing from my mod is localized.  I don't know what files you might want, so I didn't provide any, but I can if needed.

I'm pretty sure it is...

I am 98% sure that my mod ID is lowercase everywhere.  Could it be anything else?  If not, where would it matter the most that it cannot find my lang file?  It can find textures, models, and blockstates just file, just not the lang.

That is exactly what it was.  Thank you.  Though, it seems kinda weird that it works in the dev environment then, but I don't know.

Makes sense now, I had misread your previous post.  Thank you again.