Whoa, that is green! Not a camera problem, but certainly in the film/processing. Agfa Vista hasn't been manufactured for a while, so could be just heat affected or stale film. Old film usually has a magenta cast, so possibly the lab has over compensated for this cast as green is the opposite to magenta. Could be a lab problem, but if it is then they are in a sad state!
Shoot off some more, and maybe try another lab, but I feel some new film stock may be coming up