WotLK WoW ErroR

[torbalan4o7]

Hello, i have a problem, that i am not sure how to fix.
I get a wow error every time i go to Borrean Tundra,exactly near D.E.T.H.A Encampment and the Lake Kum'uya.
I disabled all my addons, becouse i thought its from them, but didnt work.
I still get the error, and im not sure what i can do .
I'm open for suggestons
Thank you.

[OhieMitzen]

Try the "old" version of WotLK if you're not using it currently.