Whenever I attempt to enter the room to the left of Ollie the game shuts down. I get a message saying that Knytt Underground has stopped working and that Windows is searching for a solution to the problem. No other information is provided, unfortunately. I'm using Vista if that is relevant.
Spoiler: (click to show/hide)Officially you can't. Well, there is a very tricky jump you can do to jump around a single tile that goes outwards... It's hard, you need to use the fact that the game still allows you to walljump 4-5 frames after you've lost grip of the wall.
I managed to get up there, there's a secret passage...that leads to a void screen.
Ah, I didn't think about that. It's not hard to fix though.