The file contains no displayable geometry - error message

Hello,

I am attempting to import 3d files into Acrobat 3d, from Blender. I've tried several different export formats from Blender and upon import to Acrobat 3d, I get the message, "The file contains no displayable geometry." Is there a way to get around this? Please help if you know the answer.

Thanks in advance.

[habbe]

Just as you know I will do a research for this question!
/Habbe