The Error appears after some minutes while playing a few rounds Arena.
I just use SUI + Details.
Even without Details i get the same bug - kinda annoying while playing Arena tho.

WoW Retail

@JugoBetrugoTV can u please download the Addons Bugsack and Buggrabber, after that you will get more details about the error.

Should be fixed. Please check and report back to us. Thanks

Hey, i didnt received the error since few days ago.
Should be fixed i guess :)