I have worked with KS for years now and one thing it has always done in all releases 7,8,& 9 is the following.
Create model in rhino, send to KS. add all materials and render. save .bip file .
later I open the rhino file and make changes to geometry, I then open the KS .bip file and from within rhino I send again to KS.
I goes throught all the updates until the end and just hangs.... saying DONE... but it is not done.. it never gets to the setup stage..