silverstripe-australia/advancedworkflow — pull request #67 by phptek (2012-11-22 02:40:56+00:00)
Title: BUGFIX: Fixed error on TreeDropDownField when selecting user-restriction...

...s in transition dialogue.

Used CheckboxSetField for simplicity to:
a). Reduce reliance on non-framework MultiValueDropdownField (and its ilk)
b). To respect the native security Admin CMS UI for user-administration which also uses checkboxes