"Could not load main init file: ptest" problem

[Ahomasu]

Hello!

I've been trying to download the Justin DLC for my Amazon downloaded copy of Amnesia. I've copied the files over into my Amnesia folder that contains the launcher for the game, and the "Justine" button is present. However, I can't load it because the error "Could not load main init file: ptest" comes up. I've copied all the files, yet it still doesn't load for me. I'm also not really computer saavy, so I'm not exactly sure what I've missed, or what ptest means.

Does anyone know how to fix this? I hope to try and play through "The Dark Room" mod...

Thanks!