Hi everyone, I am coming from the ihp-sg13g2 channel, I am beginning to get involved in open source RF design. Long story short, I need a flow to EM simulate multi port designs and do an sp simulation. I figured out that OpenEMS and Xyce is my best choice. I am using Qucs-S for my simulator GUI. I confirmed that I successfully integrated Xyce and Qucs-S because I was able to simulate a simple inductor S11 this way. But my main task is to run sp simulation on a touchstone file. The following netlist and schematic results in an empty result database. As you can see S11 is all 1s. Can you help me debug my issue? Alternatively, I could directly run a Xyce netlist from command line, but no luck there either. any help is appreciated.

* Qucs 24.3.2  /home/caglarozdag/qucs_s_tests/2portspsim_xyce.sch
P1 _net0 0 port=1  z0=50  AC 0.632456  SIN 0 0.632456 1MEG
P2 _net1 0 port=2  z0=50  AC 0.632456  SIN 0 0.632456 1MEG
YLIN YLIN_X1 _net0 0 _net1 0 YLIN_X1_model
.MODEL YLIN_X1_model LIN TSTONEFILE=/home/caglarozdag/OpenEMStest/test1/data3/run_2port_simpletest2_2port_network.s2p
.AC LIN 201 1MEG 30G
.LIN format=touchstone sparcalc=1
.PRINT ac format=std file=spice4qucs_sparam.prn sdb(1,1) s(1,1) sp(1,1) y(1,1) z(1,1) sdb(1,2) s(1,2) sp(1,2) y(1,2) z(1,2) sdb(2,1) s(2,1) sp(2,1) y(2,1) z(2,1) sdb(2,2) s(2,2) sp(2,2) y(2,2) z(2,2)
.END