The issue here is with the ellipses. The hatch tool doesn't have the math to calculate the border of the elliptical arcs.
One trick is to save the file in DXF R12 format. The DXF R12 format doesn't support ellipses and replace them with an approximation of short line segments.
After close and reopen the R12 file the hatch works and the file can also be saved in DXF fomat 2007 again.
Area_fill_R12.dxfBasically the hatch tool only supports lines, circles, circular arcs and polylines.
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