EXPORT to dxf14 error

Traceback (most recent call last):
  File "C:\Program Files\Inkscape\share\inkscape\extensions\dxf_outlines.py", line 332, in <module>
    DxfOutlines().run()
  File "C:\Program Files\Inkscape\share\inkscape\extensions\inkex\base.py", line 131, in run
    self.save_raw(self.effect())
  File "C:\Program Files\Inkscape\share\inkscape\extensions\dxf_outlines.py", line 299, in effect
    self.dxf_add("  0\nLAYER\n  5\n%x\n100\nAcDbSymbolTableRecord\n100\nAcDbLayerTableRecord\n  2\n%s\n 70\n0\n  6\nCONTINUOUS\n" % (i + 80, self.layers[i]))
  File "C:\Program Files\Inkscape\share\inkscape\extensions\dxf_outlines.py", line 81, in dxf_add
    self.dxf.append(str.encode(self.options.char_encode))
UnicodeEncodeError: 'latin-1' codec can't encode characters in position 72-75: ordinal not in range(256)

@volatile, I've split this to a new topic, as it does not directly relate to scale issues.

1. Describe your OS (your computer's Operating System: Mac/Windows/Linux/etc. & version).
2. Describe the version of Inkscape and the installer you used (the file you downloaded from the website: .msi/.exe/.zip/other ). 
3. Describe any special hardware being used, like tablet/stylus or multiple monitors.
4. Attach a file that has the error.