hfss simulation error

hi..i'm new member here...
i have a problem about hfss simulation...
i want to make a rectangular microstrip antenna with microstrip line feed...

if i try to run my design, i got error message like :

[error]Port refinement, process abc3d: Port LumpPort1 with terminals will not support terminal mode(s). Most likely causes are: Incorrect boundary setup. Incorrect face/object selected for port. Port object drawn in the incorrect location. Incorrect object material assignment. (2:59 PM May 31, 2010)
[error] Simulation completed with execution error on server: Local Machine. (2:59 PM May 31, 2010)

i dont know, what's wrong with my design... i didn't understand...

hope your advice soon...
thanks..

please help...i really need advice soon...