By "white Gizmo popup" I assume you mean the license window?
Eg:
It puzzles me that a bug of this sort exists as the entire Lua Virtual Machine is reset frequently (aircraft reload, license refresh events, etc) to ensure systems integrity.
The only real ties to X-Plane should be the OBJ8 animation datarefs that the aircraft model and manipulators rely on, the rest of the Lua systems code can be reloaded entirely by using the Gizmo reboot button. (Which the license system does for you anyway after a refresh..)