Checked this again & played with the startup options in the laucher Sorry, these auto...nas-errors all seem to be related to startup=paused. Unpaused, the don't show. For the others, see the console print:
FG_ROOT = "Path "C:/FlightGear 2017.1.1/data""
Attempting to set starting position for EDDF:25C
Reading timezone info from: Path "C:/FlightGear 2017.1.1/data/Timezone/zone.tab"
Splash screen progress creating-subsystems
Creating Subsystems
========== ==========
Reading materials from C:/FlightGear 2017.1.1/data/Materials/regions/materials.xml
picking entry # 0, server is
http://mpserver16.flightgear.org/sceneryReading systems from Path "C:/FlightGear 2017.1.1/data/Aircraft/Generic/generic-systems.xml"
Initializing HUD Instrument
Reading sound sound from Path "D:/Dokumente/FlightGear/Aircraft/My Hangar/Aircraft/MD-90/Sounds/MD-90-sound.xml"
Neither a condition nor a property specified
Neither a condition nor a property specified
Creating subsystems took:1265
Splash screen progress binding-subsystems
Loading local weather routines...
Animated jetways ... initialized
IT-AUTOFLIGHT: Please Wait!
Unrecognized value for /sim/presets/speed-set:
IT-AUTOFLIGHT: Done!
EFIS ... OK
Ground Services ... FINE!
Thrust System ... OK!
IT-AUTOFLIGHT: Done!
EFIS ... OK
?