Waveport problem in CST MWS 2010

I am trying to design a very simple probe-fed rectangular patch antenna. But I am face difficulties when I am try to run the simulation. This is the error message I get:

"Port 1 is inhomogeneously filled with the first 3 mesh cells. Cannot start solver".

Kindly find attached the cst file of the antenna design and advise me of what to fix.

Thanks in advance...

First of all, you geometry is too small, perhaps you indicated the size in cm not mm which should be the case.I have fixed it by choosing cm in the dimension definitions.
Second, you ddn't trim or insert shapes to each other, this doesn't work, I've fixed it too.
Third, you had to make a thick ground plane to cover the coax, otherwise it doesn't work. I've fixed it too.
And Fourth, I deleted your port, picked the coax face, defined a waveguide port, and there you are, works like a champ :)