Until a fix is released for this Steam
Amnesia.exe problem, you can use the binary from a retail version, which works fine. Remember it's temporary.
Download:
http://www.mediafire.com/download/8pqx74...Retail.zip
(I hope FG is ok with this)
You can replace your original
Amnesia.exe with this one if you want, later you can run a Steam fix to revert it.
Or, leave it as
Amnesia_Retail.exe and edit the mods' launchers to use this one.
Example:
launcher.bat:
Amnesia_Retail CrazyMod/config/main_init.cfg
As for that other problem with Steam where you can't change your settings in-game cause it crashes, a solution I found it's to copy the settings from another mod you already played.
To do that you gotta go inside
%HOME%/Documents/Amnesia
You'll see several directories, find the name of the mod that crashes and copy inside the files from another.
And last, if you're using
Steam+Launch_options to play mods, you may be getting an error
"Failed to load config file!".
To fix that, use the same solution as before, copy the config files from another mod. I'd recommend using the files from the directory
/Main.
Hope this helps someone.