It seems Amnesia on Mac is still dependent of Steam. Wasn't that supposed to be changed? Did it not succeed?
It would be really nice if that could work. Right now it seems the Mac version is somewhat broken compared to before. I can start the game through Steam, but starting the launcher will always start the main game even if Steam says to open a mod. Starting the game directly will start the mod... if possible. It seems White Night is one of the mods that no longer open.
I know Mac isn't a prioritized platform, but it would surely be nice to at least know you're working on this. Any updates on the Mac editors also? I've been stuck for quite a while now, along with other people.