Update: Rift 1.7 Hotfix 12

GENERAL

 * Fixed a case of drag-and-drop not working for equipping Planar Essences.
 * Made some pre-emptive fixes for future Carnival phases.

Source

 * http://forums.riftgame.com/official-rift-news/patch-notes/306684-rift-1-7-hotfix-12-8-00am-pdt-3-21-12-na-1-00am-gmt-22-3-12-eu.html