Installing a conversion on mac+steam

[Tommyboypsp]

If you were meaning something else, then i can't help. The language is too dizzy to see!

I thought I didn't have to translate anything, because it's the same screen as on the English version It's in steam when you go to the Amnesia start options.
"Start options - Amnesia: The Dark Descent
Thee options are only for advanced players.
[amnesiahill....cfg]
[OK] [CANCEL]"
Anything to the left doesn't matter. They're names of folders like music and pictures and whatnot.

Yeah Statyk, I looked up guides about how to install conversions, but I can only find guides about White Night. It comes down to entering a file (something like main_init.cfg) in the starting options, and I'm pretty sure this is the amnesiahill equivalent of that file/folder.
In the readme file it explains how to install it on Mac+retail, and it has a command for the terminal that redirects to the very same file.

do shell script "open /Applications/Amnesia.app --args amnesiahill_config/Amnesia Silent Hill_main_init.cfg"

I've tried doing this, but instead of using the retail version (Amnesia.app) and redirecting it, but I can't get that to work either. I've never used the terminal before.