Rogue "need more mana" problem in Karazhan

[BobeSin]

Hi, when I got to the chess part in Karazhan, I wanted to replenish my poisons on my daggers and it said "Need more mana" with my toon's voice and everything. Then I tried to take control of the warchief, but alas, the mana problem. I don't have mana, I'm a rogue! How can I fix this? Please help me!

Pic provided:
http://imgur.com/a/3WMlS

Update: not only in Karazhan, I TPed out to Summer's rest and wanted to go to Org through portal, and it again said "NEED MORE MANA" what the hell guys??
http://imgur.com/a/llWNU

[BobeSin]

Bump! Please help me, this is my main!

[Morrolan]

Same thing just happened to my rogue, it seems to be something to do with netherspite and standing in the beams. If you just die it goes back to normal.

[Mercy]

Please post bugs on the bug-tracker, not here on the forum.