After the latest WU6 update the SDK aircraft editor resync function causes a CTD.
Several developers and modders I talked to all have this problem.(including me)
This can be reproduced by making an empty dummy project and then resync it in the aircraft editor.
It also seems to hang up the simulator when doing a resync with an aircraft project loaded for some developers.
The resync button now is useless since the last few SDK/Sim updates with using a dummy project to resync configuration files edited outside of the SDK not working and updating textures in the sim functionality gone. (this is how plane modders and texture painters use that button)
Hope this can be fixed as it is a painfull process to restart the sim for every config/texture change.