found the following errors in designinging the HFSS

i have designed the antenna in HFSS.when i run the error the following error is shown.
HFSSDesign1 (DrivenModal)
[error] Port refinement, process hf3d error: Port 1 does not have a solved inside material on either side.. (3:25:59 PM Sep 04, 2016)
[error] Simulation completed with execution error on server: Local Machine. (3:25:59 PM Sep 04, 2016)
i changed the maximum delta value to 0.01 and 0.001 but still i fond the same error.the validate box shows everything correct.My system windows 8 ,64 bit.For coaxial feed .the material i have assigned for outer conductor is teflon,and for the inner conductor and teflon i have used pec.The same materials only i have used for port 2,but it doesn't show any error for port 1 ,I have attached my design.I couldn't find what is the error

please post your designed file

I am designing helical antenna at 9 Ghz. i am getting the same problem. I need help to resolve this issue. What can i do??

I have same error

but in my case my radiation box material is water. I substracted rad box and my coil. Delta refinement is 0.001. But still the same problem i am facing. So please anyone can help me to solve this problem.