Preventing creation of duplicate customization containers (#6 and #8 in Stephen's list).
Preventing creation of duplicate customization containers (#6 and #8 in Stephen's list).

derDaywalker/dmptool,2015SebINF1340/dmptool,derDaywalker/dmptool,2015SebINF1340/dmptool,2015SebINF1340/dmptool,derDaywalker/dmptool,derDaywalker/dmptool