Hi. Does anyone know why this error is coming when I simulate my xschem structure ? My simulations were running earlier but have stopped running recently. I can't trace which file might have been modified as the warning message that ngspice gives is pretty generic and doesn't indicate where it is not finding the endl..

Please send the complete .spice file used for simulation.

Hmm, just an idea: Could it be that your disk ran full?

gmid_golden.spice

@Ayushman Tripathi On my system your netlist simulates just fine, so as @Philipp Gühring said check if you have write access and enough free space to the path where you want to save your raw files.