There is currently very limited compatibility between Aurora-sim and opensim in general, unfortuneately.
This is an issue I, as one of the Aurora-sim team, have been argueing to regain for some time.
For now I believe it is best not to attempt to connect Aurora-sim regions to any but Aurora based grids.
This may change in the future, I certainly hope so, however I am merely "Chief Test Pilot" not one of the coders of aurora-sim.
I applied for the job as village idiot, seems they wanted someone smarter.