Update: Rift 1.5 Hotfix 13

GENERAL

 * Fixed a bug causing Riftstalkers casting Guardian Phase to not have their displayed stats correctly updated.
 * Fixed a backend NPC crash that was causing some issues.

Source
http://forums.riftgame.com/official-rift-news/patch-notes/275476-rift-1-5-hotfix-13-8-00am-pdt-11-4-11-na-1-00am-gmt-04-11-11-eu.html