Dear People,

I'm having troubles using inkscape gcodetools plugin.
For me it has been working quite well in windows, but it does not work in Linux.
Everytime When I try to set the orientation point I get the message below.
Can anyone help-me? 

Traceback (most recent call last):
  File "gcodetools.py", line 6749, in <module>
    gcodetools.affect()                   
  File "/usr/share/inkscape/extensions/inkex.py", line 268, in affect
    self.effect()
  File "gcodetools.py", line 6685, in effect
    self.orientation()       
  File "gcodetools.py", line 5851, in orientation
    doc_height = inkex.unittouu(self.document.getroot().get('height'))
AttributeError: 'module' object has no attribute 'unittouu'