Problem with module updater

It appears that the module updater for Vassal 3.1.2 is not working correctly. I get no output files after double clicking updaters generated with this new Vassal version.

To troubleshoot, I tried using updaters created with older versions of Vassal, and they still worked. Then I tried creating updaters identical to those older ones, but the new ones (which should perform in the same way) did NOT work. Does anyone know what might be going on?