The immediate issue was resolved by the user in the related question by using login.launchpad.net as his OpenID. We still need to discover why this didn't work with his LP profile URL, though, as it should have worked.
The immediate issue was resolved by the user in the related question by using login.launchpad.net as his OpenID. We still need to discover why this didn't work with his LP profile URL, though, as it should have worked.