Glade you figure it out.
Please let me know if there is any other issues.
I think I found it. I was using the headshot feature which I have a trial of. It doesn't let me export. But when I go to a new scene and don't use headshot, then it works.
We need more information in order to help you.
Which export function are you trying to use? Can you also provide a screenshot of the error message? Thanks!