Enemies don't attack. "Target too far above you"

ISP: Time Warner Cable
Type of Internet Connection: Cable
Internet Connection Speed: 10mb/s
Date & Time: 5/20/2012 11:12am EST
Frequency: unknown
Character Name: Zetsumei Tsunarashi
Race: Dunesfolk Lalafell
World: Sargatanas
Class/Level: Warrior 50
Area and Coordinates: Coerthas Central Highlands (Dragonhead) ( X: 34, Y: 21 )
Party or Solo: Solo
NPC Name: N/A
Monster Name: Cloud Hippocerf
In-Game Time: 14:36
Steps:
1. Enter Active mode.
2. Attack monster.
3. Move into an area where differing elevation causes the error message "The target is too far above you."
4. Monster and character does not attack.
5. Area of Effect actions performed by the character have no effect on the monster and vice versa.
6. Error message incorrectly states the target is too far above you, when actually the target is below the character.

http://i47.tinypic.com/2emmy46.jpg
http://i47.tinypic.com/2w7n0af.jpg
http://i46.tinypic.com/33jpetz.jpg

Greetings Zetsumei_Tsunarashi,

Thank you for posting your concerns about not being able to fight the monster at these different elevations. I have made sure to submit all of your information to the development team, and they will thoroughly investigate this matter, based on your report. Unfortunately, I cannot guarantee that a direct response will be posted on this thread, but I do recommend checking Here or Here for any details regarding the development team's investigation. Thanks again for your report!