longarm,
It could be that there is more than one account in OL. When you manually check, the second account is what is giving you the error. (I would delete all accounts except for the one account that you know is correct.)
Make double sure you do not have a default account or something else in OL.
Take Care,
Richard
P.S. If that does not work, you would uninstall OL and then reinstall it.