mothership zeta problem

[bigredz]

Downloaded this about a week ago to my xbox360 and can not get it to trigger or start if you like. Even tried going to the alien crash sight to see if that would work, but no luck. Im at level 24 and have finish the pit and the Broken Steel dlc's as well. Any of you guys got any ideas how to start it as ive looked every where and cant find a answer.

 

[Explosivo]

open up your pipboy and listen to the alien message in your radio, then select mothership zeta as your main quest then follow the map marker.

kick around the destination on your map and you'll soon be beamed up