Anyway.. my game crash at the same place when i'm upstairs. In order : I got a dialog with edgar after opening the kitchen door. Got a dialog option about "the locked door" than i didn't use because ... i didn't saw the door, i wasn't able to saw it a this point ... Then i talked with the two other in the kitchen. Then gone upstair, tried to talk with lizzie and the game crashed while switching from normal context to dialog context. (dialog UI didn't had time to be displayed, but lizzie dialog animation begun.
Then i reload a saved (that is at the bottom of stairs) tried to talk again with lizzie or go to the "red" lighted door my game crashed in both cases (and this time i couldn't even talk to lizzie, the game crashed on the path to her.)
