Hi @Stefan Schippers , a strange thing is happening -- i used ".option savecurrents" in the spice file, but simuation is giving below error.... Any ideas ??

I also got these errors some time ago. I don't know what fixed the problem, may be a ngspice update or... don't remember. I can not repproduce this problem. If you want send me the netlist i can test ngspice on my system.