on the eris, i realize it's different but what the heck
i went to settings>apps>mnage apps> and i clicked every app that had a google label and cleared data on each one.
then 1st time i logged into gmail app after that it asked for my login.
now you might want to try one at a time if you phone is fairly setup, my phone was brand new at the time and i didnt care.
let us know what works.