I am trying to extract the s-parameter of a trace that has a series resistor in the middle of it. When I select the trace by name, it only allows me to select the entire trace with the series resistor. This would be fine, however, when I hit "create model", the GUI blinks and nothing is done (it does not ask me for a file name or anything). Is there a log file I can look at to see what happened when it tried to create the mode? All I get is this "blink" and nothing. I did assign a resistor pack model to the resistor and I assigned a value of 15 ohms.