Apologies, I have been away from the tool for a decade and am simply trying to get the die-side look-in impedance from the die side with the BGA shorted from a subckt model. Hoping one of you exerts out there has sharper eyes than mine:
Problem seems to be flavor-specific ability to handle my subcircuit. Coolspice hangs, writes no output and consumes no CPU cycles. LTSpice produces reasonable results, but I am still trying to figure out how to get it to plot the magnitude of a complex number, instead of plotting the real and imaginary parts seperately.