Lina's power source not working.
 

What is the deal with Lina's power source, after I cross the bridge and click on the blue tank nothing happens. Its as if my game is bugged. I also can't talk to the guy at the pyramid, there's a dialog icon on top of his head but when I click on him he doesn't say anything. Basically I can't interact with any NPCs or object in Upper Haddar at all, but the Lower Hadder is normal. What's going on...is my game bugged?

this hapwned to me once had to backup my saves and reinstall the game