Exception when using scroll wheel while exporting

[imagejan]

I got the following exception while exporting probability maps from a tzyx dataset when using the mouse wheel:

ERROR 2016-07-25 15:09:18,059 excepthooks 1780 7428 Unhandled exception in thread: 'MainThread'
ERROR 2016-07-25 15:09:18,073 excepthooks 1780 7428 Traceback (most recent call last):
  File "C:\Program Files\ilastik-1.2.0rc6\ilastik-meta\volumina\volumina\eventswitch.py", line 100, in eventFilter
    return self._interpreter.eventFilter(watched, event)
  File "C:\Program Files\ilastik-1.2.0rc6\ilastik-meta\volumina\volumina\interpreter.py", line 55, in eventFilter
    return self.baseInterpret.eventFilter(watched, event)
  File "C:\Program Files\ilastik-1.2.0rc6\ilastik-meta\volumina\volumina\navigationController.py", line 92, in eventFilter
    self.onWheel_default( watched, event )
  File "C:\Program Files\ilastik-1.2.0rc6\ilastik-meta\volumina\volumina\navigationController.py", line 167, in onWheel_default
    navCtrl.changeSliceRelative(sign*planes, navCtrl._views.index(imageview))
  File "C:\Program Files\ilastik-1.2.0rc6\ilastik-meta\volumina\volumina\navigationController.py", line 442, in changeSliceRelative
    cursorPos[axis] = newSlice
TypeError: 'tuple' object does not support item assignment