Forum Open ID Does not work

When I try to log into the forum, I get the following area from my openID provider (http://www.myopenid.com/)

The authentication request did not provide a valid return URL. The provided URL was http://help.octopusdeploy.com/login?to=/help/profile/edit#openid&_method=post&open_id_complete=1. Use your browser’s back button to return to the requesting site and inform them of this problem.

Please note that myOpenID is a free product that we are unable to provide support for at this time.