Launcher/In-Game Settings won't work when applied

[Arkos]

Hey there!

My specs are:
Windows 7 Home Premium 64-bit
Intel i5 3570k
Nvidia Geforce GTX 780
Native resolution: 1920 x 1080

Problem: I'm utterly frustrated by how stubborn the launcher and in-game settings are. It just won't change.

Here's my Frictional Games game history.

A long time ago, I've played (in chronological order) Amnesia: The Dark Descent (Desura), the Penumbra series (Steam) and Amnesia: A Machine for Pigs (Steam) on Intel integrated graphics, in 1360 x 768 fullscreen resolution.

Between the last time I played Machine for Pigs and early this year, I bought an Nvidia card and a larger monitor that supports 1920 x 1080 resolution. Last Friday, I installed the Dark Descent on steam, just so I could play Penumbra Necrologue (steam workshop version). Necrologue seems to have its' own configurations and it worked amazingly at 1920 x 1080. (I don't know if mods or full conversions screw up Dark Descent configs.) At this point in time, the steam and desura versions of Dark Descent coexisted.

On Tuesday, SOMA was released. I installed and played the heck out of it.

Fast forward to today. I was in the mood for some custom stories. I started Amnesia: The Dark Descent through the launcher. I pressed autodetect and launched. The game ran just fine. I got greeted by a hideous and pale "default" resolution (1360 x 768. Yep, my old resolution). I exited the game, manually applied the resolution and launched. Same resolution. Tried applying in-game. Exit. Launch. STILL the same resolution.

I've tried everything. I've deleted any and all configs in My Documents, my graphics driver is up to date, the other games have been uninstalled...except SOMA.

Here's a bonus: When I'm on the profile select screen, I can't create a profile under my name. It insists that it exists already.

Are there any fixes I've missed?

Thanks.