catch occasional dbus error in activity.__init__ due to collaboration
catch occasional dbus error in activity.__init__ due to collaboration

walterbender/turtleconfusion,walterbender/turtle3D,AlanJAS/turtleart,walterbender/turtleartmini,walterbender/AmazonasTortuga,walterbender/turtleart,walterbender/turtleflags