Custom asset render fail

[halmatro]

I have imported an fbx file of curtains and it renders perfectly in the preview window of the custom asset editor, but not in the model. Please see attached pictures.

link to fbx file: https://www.dropbox.com/s/5qv3dhkbcwnetus/curtain235.FBX?dl=0

If anyone has an idea please let me know

Thank you.

[halmatro]

If anyone was wandering whatthe solution was, it was checking “Double sided”