Phase shifter with diode package in CST.

I have created a stripline based phase shifter using diodes with packaging (haven't gotten to the biasing network yet) and discrete face ports within the package for use in DS where I have a spice model for pin diode simulation. The problem I am facing is when I try to run the transient solver using "discrete face ports" I get a warning, "Excitation edge of the face port 3 touches PEC shape: Background" followed by an error saying port geometry is too complex. Then I tried using a "discrete edge port" instead and I also get an error in which it is inside a perfectly conducting material. The port is inside the "package" material which is sitting 0.253mm above the substrate and 0.183mm above the feed lines. As for the package material I have the type as "normal" with epsilon = 4 and Mue = 1. Of course the package pins are of PEC (tried both PEC and normal material type) material however the Transient Cosimulation example model in the help contents has the EXACT same thing and yet it runs fine. I've attached images of the phase shifter and diode package. Any thoughts would be great. Thanks.

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