OrCAD 17.2 Pads Without Pastemask Generate Warning

The new padstack editor included with OrCad / Allegro 17.2 chokes on pads with a pastemask of dimension 0.  It throws a warning and refuses to generate the pad.  Instead of generating a pad with 0 dimension, the script should not generate any pad at all. 

Here's a script which shows the failure:

# Allegro script
# Generated by FPX Expert
#   name:       c1800p0

QtSignal MainWindow New triggered
QtSignal fileNewDialog dataCombo CurrentIndexChanged "SMD Pin"
QtSignal fileNewDialog dataCombo activated "SMD Pin"
QtSignal fileNewDialog browse clicked
QtFillin c1800p0.pad
QtSignal fileNewDialog OK clicked

QtSignal MainWindow Units CurrentIndexChanged Millimeter
QtFillin Yes

QtSignal GuidedDesignLayersTab LayersTable cellClicked 0 "Regular Pad" None 0 2
QtSignal GuidedDesignLayersTab PadShape CurrentIndexChanged Circle
QtSignal GuidedDesignLayersTab PadShape activated Circle
QtSignal GuidedDesignLayersTab PadDiameter editingFinished 18

QtSignal GuidedMaskLayersTab LayersTable cellClicked 0 Pad None 0 1
QtSignal GuidedMaskLayersTab PadShape CurrentIndexChanged Circle
QtSignal GuidedMaskLayersTab PadShape activated Circle
QtSignal GuidedMaskLayersTab PadDiameter editingFinished 18

QtSignal GuidedMaskLayersTab LayersTable cellClicked 2 Pad None 2 1
QtSignal GuidedMaskLayersTab PadShape CurrentIndexChanged Circle
QtSignal GuidedMaskLayersTab PadShape activated Circle
QtSignal GuidedMaskLayersTab PadDiameter editingFinished 0

QtSignal MainWindow Save triggered
QtSignal MainWindow Exit triggered