I'm running FlightGear 2017.2.1 in Ubuntu 16.04: NASA Space Shuttle Atlantis out of KATL (because I thought it would put me on the launch pad regardless of Airport selection).
Last message in the FlightGear opening screen is "Loading Scenery"
...which corresponds to the last thing to print in the log window is:
Loading stg file Path "/home/.../.fgfs/terraGIT/Terrain/w090n30/w085n33/1564368.stg"
I get this exception in an error message dialog:
FGPropertyValue::GetValue() The property systems/dps/ops does not exist.
I cloned this repo: https://github.com/FGMEMBERS/SpaceShuttle.git
I'm not experiencing issues with other Aircraft.
Thanks in advance for any help or debugging advise.