I have updated to the new 2.7 version and thought I try the new quick pushback feature, but when I selected this the screen flashed on the overhead edit mode then immediately gave an error stating that GSX was causing Couatl to become unresponsive and ask to restart couatl. I did so which sent my plane into a spiral acrobatic maneuver which ultimately crashed the sim. No idea what happened, but sending the sim into GSX edit mode seemed to cause some sort of issue.
Couatl files attached.