AAMFP error at the startup

[plutomaniac]

1) Go HERE and first do a local content deletion (a.k.a game uninstall) followed by a file integrity check when you have the game downloaded again.
2) Go to Documents\Amnesia and delete the folder Pig.
3) Launch the game again. If it crashes attach the file HPL.log as mentioned at the troubleshooting guide, Problem X.