InRoads?
I believe Ss3 installs to \Program Files\InRoads Group (SELECTseries 3)\ while Ss2 installs to \Program Files\InRoads Group V8.11\
I always start the InRoads products from their icons. Since the new variables were added, there is no way to launch InRoads from within MicroStation and having a choice of Ss2 or Ss3.