Problem with FEKO AW card

A error occurs when using the AW card.

Number of the excitation: N = 1
Waveguide port label: slot.port1
No metallic triangle with the label slot.port1 has been found
ERROR 4632: The triangles for the waveguide port do not exist (AW card)

But i think the triangles exists!

How to solve this problem?
thx

Do you use CadFeko or EditFeko?

yep
i made a very stupid mistake that the name of face was misspelled.

Now i have another question. how to define a waveguide matched load in FEKO?

[quote="lonalpha"]Use a waveguide port with 0 voltage.

[quote="mvr"]Use a waveguide port with 0 voltage.