As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INFLIGHT, CREW REPORTED EICAS MESSAGE RIGHT ENGINE ANTI-ICE DISAGREE LIGHT ILLUMINATED. EMERGENCY DECLARED FLIGHT DIVERTED, LANDED WITHOUT INCIDENT. LOCKED VALVE IN OPEN POSITION PER THE MEL. FLIGHT CONTINUED TO DESTINATION. REPLACED RIGHT HAND ANTI-ICE VALVE ON 03/04/2012. SYSTEM GROUND CHECK NORMAL OPERATION.