This is the first time I have used this simulator and am having trouble figuring how to use it. To start with I have a very easy circuit consisting of a power source, a voltmeter connected to the positive power source and the other side of the power source and the other side of the voltmeter are each connected to ground. I used the supply flag ground symbol for this and used the +5V supply flag for the positive and changed it to +12V. I'm thinking if I run the simulator for voltage I should see there is 12 volts at the voltmeter. I think if I run the DC op pnt I should get the voltage. Instead I get: Circuit: untitled Doing analysis at TEMP = 27.000000 and TNOM = 27.000000 Warning: v2: no DC value, transient time 0 value used No. of Data Rows : 1 Error(parse.c--checkvalid): xvm1_1: no such vector. ngspice-26 done I imagine I'm doing something wrong. Can someone get me started? Circuit: untitled Doing analysis at TEMP = 27.000000 and TNOM = 27.000000 Warning: v2: no DC value, transient time 0 value used No. of Data Rows : 1 Error(parse.c--checkvalid): xvm1_1: no such vector. ngspice-26 done TIA