Hi, I'm trying to get started with using the XSpice simulation functions in Solidworks PCB.  I set up a very basic RC circuit and added a sinusoidal voltage source.  I open the voltage source properties, and then select the simulation model and click 'edit.'  Instead of seeing the simulation model parameters, I just get a pop-up message saying 'stream read error.'  /*see photo).   I get the same message when I try to add a simulation model to my custom components that don't have a simulation model.  Any suggestions on what is happening and how I can fix it?