IRB 6600 Simulation Can't Select Robotware 6.05

MDRegan

I'm creating a simulation for a 6600-175/2.8 Type B that is currently running on RobotStudio 6.05.00. When I create the simulation and add a virtual controller it tells me 6.05 is not compatible with this robot. Setup as IRB6600_175_280_01 in RS. I tried robotware 6.01.01 with the same results. The model was given to me by our R&D group with the cell already setup, so I don't want to change the robot in the simulation if at all possible. 
What am I doing wrong here? Simulation setup isn't usually this painful