I solved that problem. Version is Pro and latest updated. Max version is 2019.3. I'm trying to animate a flag. I can make an animated box. But I can't bake flag animation. It's opening static like on moon. :D How I can do this? I'm trying your tutorials.
My max file: http://www.onurunwebsitesi.com/flag.zip
My max file: http://www.onurunwebsitesi.com/flag.zip