Comment 78 for bug 293940

    the problem was probably caused by the fact that the dxf file contains a pattern effect used in a HATCH element, while the current routine supports only solid hatches, not patterns. However, apart from that, there were BLOCKS in the file. So I loaded the file into QCad, and used the menu procedure Block | Explode to process the blocks and then re-saved the file. The resulting file loaded into Inkscape, attached here.
    I would recommend using the explode block routine either in AutoCAD or in QCad, whenever possible.