Okay, so why am I not able to open the left front door in any a/c state. All other doors I can open with no problems? In Cold&Dark none of the doors will open, making it impossible for the pilot to get into the cockpit in the first place ;( What am I missing here??? And YES, I have spent several hours going through the documents provided. Btw, when I press Shift+E, I get the message that the main door is opened, but the outside view shows the door still closed.

I can confirm Madfred's finding. Every door can open without power except the main left cabin door! Must be a bug! FRED

I had this problem a lot until I took notice of the pressure, some reason when start Cold and Dark the outflow valve closes instantly and the cabin pressure flys through the roof but you can't tell by the gauge until standby power is switched on, at that point either manually open the outflow valve or get a AC supply besides standby power (engine, APU or ground) and the automatic pressurization will open the valve.That is my problem 90% of the time but I have had a issue before with just L1 refusing to move until it is powered but that is a rare one for me.