I created the virtual link as follows:
mklink "C:\Users\wimva\OneDrive\Documenten\Plan-G Files" "E:\X-Plane\Plan-G Files"
Now Plan-G crashes at startup.
mklink "C:\Users\wimva\OneDrive\Documenten\Plan-G Files" "E:\X-Plane\Plan-G Files"
Now Plan-G crashes at startup.