Please be sure to read the instructions for the Debug mod. It explicitly states that it is a manual patch and not installed using the mod system, so selecting it in the Mods menu will have no effect.
From what I can make out from the screenshot your "AricsExpansion" is spelled correctly, so you have some other issue.
Also, the mods are essentially always source code as the game is open source and the mod system works by editing the game's code to include the mod's code.