Crossfire Error 0x90909090 how can i fix this problem?

today early i try to login crossfire and every time i choose the room and i have this problem. here below is the full message before i get d/c
" The instruction at 0x90909090 referenced memory at 0x90909090. The memory could not be read.
Click on OK to terminate the program"
and here is the screen shot i take http://imageshack.us/f/35/crossfireerror.jpg/

Please can some Technical Support help me solve this problems PLease! Thanks

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