* Which toolkit are you using? Common toolkits are 'fltk' (which is default now) or 'gnuplot'. Consider switching to another available toolkit (see available_graphics_toolkits) and try it there. You have to execute (for example switch to gnuplot) 'graphics_toolkit gnuplot' before any plotting command.
* Which Ghostscript version do you use? Is it a 32 or 64bit build? Please add URL to download. If 64bit under Windows see
=== Debug printing with gnuplot ===