Writing Files to Rhino (RHYNAMO) -- Null

Having some issues writing files to rhino using rhynamo. Everything seems to be working correctly up until the “SaveRhino3dmModel” Node. I have a feeling I am missing some thing small and inconspicuous.

Can anyone tell me what might be wrong?

3-16-2015 4-28-10 PM

 

 

 

 

 

 

 

Thanks in advance,

Ron