Expoeting Blender FBX for Daz studio 4.9

I have an error message when I try to export FBX format. I would include a picture of what I’m doing and the message I get, but I’m not sure how to do that. I need some help please. I did a test with a cube w/o materials and a modified cube and materials they saved fine and opened in Daz Studio 4.9 fine except the cube was huge bigger than my figure of the Minotaur. Thank you
CyberChild