Hi @Stefan Schippers excuse me, could you tell me please meaning of this error! I am trying to fetch and print transistor's drain current in the circuit. Thanks.

I think is .option without the S

@Roberto Di Lorenzo I do not think that is the reason. Example from NGSPICE's Manual,

.options

is used. Thanks

please send the complete netlist (the .spice file)

Hi @Stefan Schippers the spice file is attached.

Thank you, the problem is due to a component in xschem. Please save the attached file and save in your xschem installation, overwriting the old symbol:

cp simulator_commands_shown.sym  .../share/xschem/xschem_library/devices

In above command replace

...

with the location of your xschem installation, may be

/usr/local

or your home directory. This problem was fixed in xschem 3 days ago, but instead of reinstalling everything just copy this new symbol. Then generate the xschem netlist again.

Thanks @Stefan Schippers. The component is fixed and the problem is fixed. Thanks.