When I fnished the Research the Pretenders mission, I hit the close button for the mission window, and it popped up saying to begin the next mission, which shouldve requried p21 to appear. When I went to acept the mission it came up with "Mission reqirments not met" which is fair enough, just thought you might want to make it so that ppl dont actually see that mission till p21, not when they close the previous mission.