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TINA TI time varying resistor

I am trying to simulate a 4-active arm wheatstone bridge with time varying resistor values.

I downloaded the  "vcr 1k.TSM model that Britt offered a few years ago.  I built it into a circuit but when I simulated it I received an error: Irregular circuit

It works with one vcr 1k.TSM model in the lower bridge but not with 4.  Can you tell me how to do 4?

Thank you.