Under some conditions, the pods tend to blank out. It's a quirk of the OWL interface. Try dragging the pods off the bottom location and making them wider.
This behaviour was discussed in another thread where the Variables pod didn't show anything. See: http://forums.adobe.com/thread/1398821?tstart=120
Well, this morning the Insets pod is populated, but now I know what to try if it's ever blank again. Thanks!