$ python SpiroApp.py
Traceback (most recent call last):
  File "/home/jesse/downloads/Spiro.zip_FILES/Spiro.py", line 490, in OnScaleBoxText
    self.setScale (True)
  File "/home/jesse/downloads/Spiro.zip_FILES/Spiro.py", line 359, in setScale
    self.rescale ()
  File "/home/jesse/downloads/Spiro.zip_FILES/Spiro.py", line 310, in rescale
    self.marker.draw (dc, 0, self.insideBox.IsChecked (), True)
  File "/home/jesse/downloads/Spiro.zip_FILES/Spiro.py", line 70, in draw
    mQ = mR/self.gear.radius
ZeroDivisionError: float division
Traceback (most recent call last):
  File "/home/jesse/downloads/Spiro.zip_FILES/Spiro.py", line 466, in OnSizeBoxText
    self.setCircleSize (True)
  File "/home/jesse/downloads/Spiro.zip_FILES/Spiro.py", line 394, in setCircleSize
    self.rescale ()
  File "/home/jesse/downloads/Spiro.zip_FILES/Spiro.py", line 310, in rescale
    self.marker.draw (dc, 0, self.insideBox.IsChecked (), True)
  File "/home/jesse/downloads/Spiro.zip_FILES/Spiro.py", line 70, in draw
    mQ = mR/self.gear.radius
ZeroDivisionError: integer division or modulo by zero
Traceback (most recent call last):
  File "/home/jesse/downloads/Spiro.zip_FILES/Spiro.py", line 474, in OnMarkerBoxText
    self.setMarkerSize (True)
  File "/home/jesse/downloads/Spiro.zip_FILES/Spiro.py", line 331, in setMarkerSize
    self.rescale ()
  File "/home/jesse/downloads/Spiro.zip_FILES/Spiro.py", line 310, in rescale
    self.marker.draw (dc, 0, self.insideBox.IsChecked (), True)
  File "/home/jesse/downloads/Spiro.zip_FILES/Spiro.py", line 70, in draw
    mQ = mR/self.gear.radius
ZeroDivisionError: integer division or modulo by zero
Traceback (most recent call last):
  File "/home/jesse/downloads/Spiro.zip_FILES/Spiro.py", line 482, in OnRotBoxText
    self.setRotations (True)
  File "/home/jesse/downloads/Spiro.zip_FILES/Spiro.py", line 364, in setRotations
    self.rescale ()
  File "/home/jesse/downloads/Spiro.zip_FILES/Spiro.py", line 310, in rescale
    self.marker.draw (dc, 0, self.insideBox.IsChecked (), True)
  File "/home/jesse/downloads/Spiro.zip_FILES/Spiro.py", line 70, in draw
    mQ = mR/self.gear.radius
ZeroDivisionError: integer division or modulo by zero
Traceback (most recent call last):
  File "SpiroApp.py", line 20, in ?
    main()
  File "SpiroApp.py", line 16, in main
    application = BoaApp(0)
  File "/usr/lib/python2.4/site-packages/wx-2.6-gtk2-unicode/wx/_core.py", line 7473, in __init__
    self._BootstrapApp()
  File "/usr/lib/python2.4/site-packages/wx-2.6-gtk2-unicode/wx/_core.py", line 7125, in _BootstrapApp
    return _core_.PyApp__BootstrapApp(*args, **kwargs)
  File "SpiroApp.py", line 11, in OnInit
    self.main.OnInit ()
  File "/home/jesse/downloads/Spiro.zip_FILES/Spiro.py", line 263, in OnInit
    self.marker.draw (dc, 0, self.insideBox.IsChecked (), True)
  File "/home/jesse/downloads/Spiro.zip_FILES/Spiro.py", line 70, in draw
    mQ = mR/self.gear.radius
ZeroDivisionError: integer division or modulo by zero