Stress Isometric does not create a drawing file, why?
No piping in the model / segments hidden
There was no piping in the model or all piping was hidden from view. Use procedure here to create a Stress Isometric. The first step would be to Zoom model's extents, Zoom window on displayed piping, or select a range of piping to be exported. AutoPIPE only creates isometrics based on displayed / selected piping components in the model. Beams are not exported to a Stress Isometric.
Reasons why stress Isometric was blank or does not create a drawing file?