Hi
I guess I solved it. I generated a “.bts” file instead of a “.wnd” one, using the “lollypop” wind-field switches mentioned by Marshall Buhl in FAST: Tower Drag and Tail vane inertia - #5 by Marshall.Buhl and now FAST is running properly. I hope thus is correct. I am yet to run verification tests.
Sincerely
Abhinav