I have done this dungeon two times with 2 different groups of people. The first time i beat it then it said talk to professor Winthrop but he disappeared cause quest ended. So I had to re do the dungeon except now it is stuck on place staff when I already did and beat quest a second time. Please help!!
I might be a bit lost. You have the staff go to the platform with all the holes (think Indiana Jones and Raiders of the Lost Ark). Then at the end of the platform you will see the "X" to execute the staff
Once you finished the Map Room dungeon the first time, you had to return to the main entrance of the great pyramid and talk to Professor Winthrop where he usually is standing. He'll send you to the Sphinx Island.
If Professor Winthrop isn't talking to you and you're stuck in the Map Room, you may need to send in a request for help from support.
I think you got a little confused as to where Professor Winthrop is.
Once you get the quest to talk to him, ( make sure you finish the boss battles/ putting the staff on the platform first ) Just port back to the Oasis and go into the Great Pyramid and talk to him where he normally stands.