ran the Encore mission solo last night and was not able to finish it because when I inserted the green module and the platform opened up and I activated the confluence but the vex circle where you stand would not activate.. so I wiped and did it again and then it worked , I killed all the enemies and the final boss had the triangle showing so I activated the boss and took it down until it was immune..after that it disappeared and would not come back .. the red wall never appeared.. I spent a half hour trying but was not able to complete the mission.. I was not happy .. now I have to do it all again... Is there a glitch in the mission ???? Thank You