I get an 500 error when trying to save “My settings” with openID identifier

Error page:

Application error The OpenStreetMap server encountered an unexpected condition that prevented it from fulfilling the request (HTTP 500) Feel free to contact the OpenStreetMap community if your problem persists. Make a note of the exact URL / post data of your request. This may be a problem in our Ruby On Rails code. 500 occurs with exceptions thrown outside of an action (like in Dispatcher setups or broken Ruby code

Thank you!