gxa/gxa — pull request #180 by rpetry (2011-11-07 15:27:09+00:00)
Title: Ticket #3176 - In the case of no R services, eliminate NPE and present a 

Ticket #3176 - In the case of no R services, eliminate NPE and present a sanitized message to admin i/f user: 'Can't create R service, so can't compute!'

@alf239 - could you review please