Comment 2 for bug 1200399

Reproduced with Inkscape 0.48+devel r12415 on OS X 10.7.5, Python 2.7.5, GTK+/Quartz 2.24.19:
exporting of the provided sample SVG file to GIMP XCF (GIMP 2.8.6 installed) fails with this error message:

Traceback (most recent call last):
  File "gimp_xcf.py", line 271, in <module>
    e.affect()
  File "/Volumes/magenta/mp-trunk/src/inkscape-repo/mptrunk-quartz/inst/share/inkscape/extensions/inkex.py", line 267, in affect
    self.effect()
  File "gimp_xcf.py", line 235, in effect
    f.write(script_fu)
UnicodeEncodeError: 'ascii' codec can't encode character u'\u0301' in position 1832: ordinal not in range(128)