Demo Issue Black screen

[JordanTate]

No ideas yet, except

Try disabling ImageTrail effect from the advanced graphics menu (via the main menu, not the launcher).

Won't help with the game hanging up when opening menus in-game, though.

Waiting for Thomas...

I disabled image trails and managed to get some gameplay, The mouse was working, walking around and peaking around doorways worked fine, but after 30 seconds of gameplay, I tried opening the journal and it froze. I rebooted, and tried other things such as hitting escape to quit and it also froze.
The mouse sticks in the left hand corner of the screen and makes it aukward to close with task manager.
Game runs nice and smooth on high from what ive played, so no performance issues after disabling image trail apart from it being unplayable when trying to open journel and such.