Am quite new to CC3 and Iclone 7.

Am trying to export from CC3 to Unity and keep getting the error "fbx export failed" no further information is provided. 

Character base is imported from Daz3d
Clothing is imported and converted from OBJ files

Export works to 3DS Max without any error
Export to Unity 3D fbx format also works with other template models

I have the CC3 pipeline version. Everything is up-to-date
I have tried to move the project to another computer and get the same error. 

Appreciate any helping in pointing me in the right direction in fixing this error. I am assuming I am missing an important step somewhere, but don't know what.