Anyone know what this wow error is and how to fix it

[paperc07]

World of WarCraft: Retail Build (build 16057)

Exe: C:\Program Files (x86)\World of Warcraft\Wow.exe
Time: Sep 27, 2012 1:12:42.123 PM
User: XBOX
Computer: XBOX-PC
------------------------------------------------------------------------------

This application has encountered a critical error:

ERROR #0 (0x85100000) Assertion failure!

Program: C:\Program Files (x86)\World of Warcraft\Wow.exe
ProcessID: 30464




Been getting it all day

 

[Tony]

first time seen it but i Google it and there are many posts about it on Blizz's forums

 

[paperc07]

ok thanks tony I guess ill just keep tabs on it