Im trying to create a .NC file to use with my Laser Engraver and I keep getting Error codes. I added the Laser engraver files it came with in the extension folder. I am just assuming that is where they go, it wasn't very clear. These are the files it came with:

laserengraver.py
laserengraver_laser.inx
png.py
raster2laser_gcode.inx
raster2laser_gcode.py

These are the error codes it is producing when trying to create the .NC file:

Orientation points have not been defined! A default set of orientation points has been automatically added.

Traceback (most recent call last):
File "laserengraver.py", line 3188, in <module>
e.affect()
File "C:\Program Files\Inkscape\share\extensions\inkex.py", line 268, in affect
self.effect()
File "laserengraver.py", line 3156, in effect
self.orientation( self.layers[min(0,len(self.layers)-1)] )
File "laserengraver.py", line 3080, in orientation
doc_height = inkex.unittouu(self.document.getroot().get('height'))
AttributeError: 'module' object has no attribute 'unittouu'

The file i am trying to convert is just a black and white Tiger face. Any help would be fantastic. I have been searching and tinkering with stuff for hours with no success. Thanks

Hhmm, NC.... Seems to be something related to CNC.

Could you give us the link to this extension? I wouldn't be able to test it myself, but others might be able to.

Also, which version of Inkscape, and what is your operating system?

The extension seems to not have been updated to work with Inkscape 0.91. Please ask the authors of the extension to update it.