Comment 3 for bug 1614111

Reproduced on Windows XP (32-bit) with 0.91 (same error message) and 0.92, with a different message:

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Traceback (most recent call last):
  File "synfig_output.py", line 1344, in <module>
    e.affect(output=False)
  File "d:\dev\Inkscape\0.92.x\inkscape\share\extensions\inkex.py", line 283, in affect
    self.effect()
  File "synfig_output.py", line 1053, in effect
    SynfigPrep.effect(self)
  File "d:\dev\Inkscape\0.92.x\inkscape\share\extensions\synfig_prepare.py", line 483, in effect
    propagate_attribs(self.document.getroot())
  File "d:\dev\Inkscape\0.92.x\inkscape\share\extensions\synfig_prepare.py", line 383, in propagate_attribs
    dw = get_dimension(node.get("width", vw))
  File "d:\dev\Inkscape\0.92.x\inkscape\share\extensions\synfig_prepare.py", line 455, in get_dimension
    elif s[-1] == "%":
TypeError: 'float' object has no attribute '__getitem__'
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Related to bug #1463623 "Error trying to save Optimized SVG (no 'width' attribute for SVGRoot)"?