Okay, where I'm getting lost is people keep saying "Blockland automatically executes .cs files without putting them in a .zip" and then some extremely fragmented information about where the files go and how they're oriented. That's why I'm so confused. But I think Zack got it best... Apparently, Blockland can still load files like before .zip files? Although I still don't remember how that worked, it's been too long.
I guess I could go look in my Old Add-Ons folder.