Boundaries overlap

Hi
I have an interesting problem (for me atleast)!
I found HFSS tutorial describeing an coax fed patch antenna together with .hfss file for the same antenna (patch_antenna(2).hfss). This file works perfectly!
Now, a made an IDENTICAL file for the IDENTICAL antenna (patch_antenna(1).hfss) using the tutorial (practically copying it) and IT DOESN'T WORK!!! It sais that boundaries rad1 and perfE2 overlap (which is correct) and it won't solve it.
Can you please take a look at patch_antenna(2).hfss and tell me why in this file boundarise don't overlap!
Thanks

If you read the tutorial again you will note that when they define the radiation boundary they tell to select all the faces axcept the one at z=0 which corresponds to ground.
Make as this and it will work!
Regards...

Thanks
it's true, it does work, but they dont mention this in the tutorial!!!