CROSSFIRE ERROR - Error rez\Shader\legacyshader.fxo

Hello

After updating today, my crossfire is constantly giving me ''CROSSFIRE ERROR'' error and goes down.
When I'm playing it doesn't happen, only when I'm in the lobby or in the store...

I already uninstalled the game and reinstalled it.
I have already turned off the anti-virus.
I already formatted my computer and the error persists.

I need you to try to help me fast because I'm sad about this situation.

Thanks,
LOSER