Can't set schedule to anything other than manual

[eatloaf]

On OSX via Port.

Whenever I click OK after changing the schedule method, I get:

Traceback (most recent call last):
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/timedrive/generalsettingsdialog.py", line 332, in btnOk_Pressed
    self.UpdateSettings()
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/timedrive/generalsettingsdialog.py", line 309, in UpdateSettings
    utils.setup_cron( self.ui.comboSchedule.currentIndex())
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/timedrive/utils/__init__.py", line 155, in setup_cron
    cmd = programName + ' > /dev/null 2>&1'
TypeError: unsupported operand type(s) for +: 'NoneType' and 'str'
Traceback (most recent call last):
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/timedrive/generalsettingsdialog.py", line 332, in btnOk_Pressed
    self.UpdateSettings()
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/timedrive/generalsettingsdialog.py", line 309, in UpdateSettings
    utils.setup_cron( self.ui.comboSchedule.currentIndex())
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/timedrive/utils/__init__.py", line 155, in setup_cron
    cmd = programName + ' > /dev/null 2>&1'
TypeError: unsupported operand type(s) for +: 'NoneType' and 'str'