I'm attempting to change the e-mail address used for Stack Exchange communications. There doesn't seem to be an option for doing that, beyond creating a new StackExchange OpenID and merging the two accounts. So in a different browser, I visited an SE site and created a new ID with the new e-mail address. Then I went back to the primary browser where I was already logged in, and in My Logins I selected Add More Logins, clicked Log In with Stack Exchange, and entered credentials for the new account.
I got a warning like:
This login is new to Stack Exchange (firstname.lastname@example.org) Do you want to add this login to your Stack Exchange account?
and I selected Add Login.
I then get an error:
Unable to log in with your OpenID provider:
An unexpected error occurred while logging in. It's not you, it's us. This is our fault. Detailed information about this error has automatically been recorded and we have been notified.
This is pretty consistent. After the first time, I no longer need to enter the credentials and am brought directly to the confirmation, always followed by the error. Is there a workaround?