Hi, does anyone know about this error?

From what I can tell, it appears that after device reduction (combining parallel devices: schematic 108->12, layout 186->12), the layout width (circuit2) is twice that of the schematic width (circuit1). Make sure you do not have duplicate placements (one layout device cell exactly overlapping another cell.).

You were right, there were duplicate cells underneath, do you know why this happens?

@Tim Edwards I believe you fixed the gds conversion script routine to ignore duplicate placements, but is there a version of magic that allows duplicate placements?

@Mitch Bailey: Magic will automatically remove duplicate cells on GDS read-in and when using the getcell command in magic. There are probably ways to get it to happen anyway that I don't know about. If you had a left-right symmetric cell and made a copy, flipped it, and then placed it on itself, that would be legal and undetected by magic, but there are likely ways get a cell placed exactly on top of itself somehow.