Lost Tunnel market door won't open

[L30N75]

So I did the mission "Lost tunnel" and I found everything. my problem is that the door to the market won't open.
As Bourbon said I should show me to the people in the train-thingy I went down the ladder to the left and went to the area where you find a pistol with a different attachment and a safe, which I opened and looted. When I go up the stairs now, Bourbon just stands there and nothing happened. I tried taking off the mask, turning the flashlight on/off and walking near the door but nothing worked. Do I have to restart the entire mission just because of that ♥♥♥♥♥♥♥t?
And when I load the last safestate it just sets me down to the room I mentioned (with the pistol and safe)

[Jig McGalliger]

Reload from chapter select menu?

[L30N75]

Tried that and didn't work. had to replay the whole mission, gladlytaken that it's not very long.