Add pygtk dialog message when an exception is thrown form the script to alert users.
Add pygtk dialog message when an exception is thrown form the script to alert users.


Autoconverted from SVN (revision:392)

artefactual/archivematica-history,artefactual/archivematica-history,artefactual/archivematica-history,artefactual/archivematica-history