The app \"DAGGER\" (RAGE 2)

Flew from the doctor in the direction of the mission marker on the road died because of what happened outside the card. The marker is gone. The mission fails when I arrive at the place. To talk with the doctor not though the token conversation hanging over your head. Just press e, a marker of conversation is lost and the doctor is silent. Tried to walk through other NPCs, with them finally to talk is impossible. In General, I am all done and the knife for the new refuses to start.I read that some helped restart, it is probably not my case. HELP PLIZ!!!