use the steady state solver

Hi Amy,

Steady State Solver is a part of switching mode power supply analysis tool function. The state variable is a minimum set of variables that given their values at initial state when t=0 and the system inputs as a function of time can be used to predict system performance when t>0. The dynamic models that consist of coupled first-order differential equations are prescribed to be in state-variables, such as states of capacitors and inductors in combination with resistors in a steady state. 

If you add a capacitor or an inductor in the op amp circuit, the state variable message = 0 will not be prompted. But I am not sure that purpose of op amp simulation under the analysis tool.  You could just use Analysis --> transient to get your simulation result. 

If you have another questions, please let us know. 

Best,

Raymond