Black Gold mission glitch

[Arthur]

Fairly old and fairly known glitch, but basically, in the Black Gold mission, after I placed all the four bombs, Sam asks me to drive him to a place, then he gets out of the car and enters a house. He asks me to controll the turret in the car and defend him while he's defusing a bomb or something. I do this, kill all of the enemies (and the helicopter), but Sam never leaves the house, and the game won't let me exit the turret, either. I tried restarting from the last checkpoint, tried restarting the entire misison, and I even abandoned the mission, did som side quests, then started the mission again, and still, once I get up to that part, Sam never leaves this fking house.

The mission is this one: https://youtu.be/UAERE_ZYuCI?t=9m32s

[ҥӵриӧѕ]

I remember that mission. Make you drive into the white area (car silhouette) and don't reverse. So the vehicle is facing the fence. Good luck.

[Arthur]

Oh, nevermind. It wasn't that. I'm using the UltraLow graphics mod. It caused the glitch. Removed it, finished the mission, then added it again. But thanks!