HFSS SMA connector simulation problem

I'm trying to obtain an s-parameter simulation for a board with two SMA connectors connected by CPW. I am following the same procedure that I did for a stripline simulation found here: http://coefs.uncc.edu/radams41/files...s_tutorial.pdf
I am currently getting this error when I run the analysis: "Port refinement, process hf3d error: Too few conductors were found on port 1. There should be one conductor for each terminal, with one additional reference conductor. Unintentional contact between conductors may cause this error.."
Can anyone give me some advice? Thanks!