Exception in Tkinter callback
Traceback (most recent call last):
  File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 1545, in __call__
    return self.func(*args)
  File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 595, in callit
    func(*args)
  File "/usr/bin/axis", line 825, in update
    if vars.metric.get(): m = m * 25.4
  File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 376, in get
    return getint(self._tk.globalgetvar(self._name))
TypeError: int() argument must be a string or a number, not '_tkinter.Tcl_Obj'
Exception in Tkinter callback
Traceback (most recent call last):
  File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 1545, in __call__
    return self.func(*args)
  File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 595, in callit
    func(*args)
  File "/usr/bin/axis", line 513, in actual_tkRedraw
    self.tkRedraw_perspective()
  File "/usr/bin/axis", line 473, in tkRedraw_perspective
    self.redraw_perspective()
  File "/usr/lib/python2.7/dist-packages/rs274/glcanon.py", line 314, in inner
    return f(self, *args, **kw)
  File "/usr/lib/python2.7/dist-packages/rs274/glcanon.py", line 513, in redraw_perspective
    self.redraw()
  File "/usr/bin/axis", line 551, in redraw
    GlCanonDraw.redraw(self)
  File "/usr/lib/python2.7/dist-packages/rs274/glcanon.py", line 949, in redraw
    self.show_extents()
  File "/usr/lib/python2.7/dist-packages/rs274/glcanon.py", line 565, in show_extents
    is_metric = self.get_show_metric()
  File "/usr/bin/axis", line 521, in get_show_metric
    def get_show_metric(self): return vars.metric.get()
  File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 376, in get
    return getint(self._tk.globalgetvar(self._name))
TypeError: int() argument must be a string or a number, not '_tkinter.Tcl_Obj'