Well actually I know, that I should replace & by %26
But I'm using this URL to log in with OpenID: https://innubili-gidea.appspot.com/_ah/login_redir?claimid=https://www.google.com/accounts/o8/site-xrds?hd=icada.com&continue=https://innubili-gidea.appspot.com/%3Fdomain%3Dicada.com%26campaign%3D2%26 [image: Login Link] As you can see, the continue parameter is properly escaped. But after being redirected through Googles login pages, it redirects me back to https://innubili-gidea.appspot.com/?domain=icada.com So the &campaign=2 parameter is missing [image: Link after Login] Can you confirm, that I escaped the continue parameter correctly? For then it looks to me as this seems to be an issue at Googles login. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.