@synth01: See this thread: http://ww.wp.xz.cn/support/topic/282369
@poloniculmov: What theme are you using? And, are you entering the URL on the WordPress login form?
@davehope: Are you running a custom theme?
@antair: what theme are you using?
v3.0 of the plugin is now available and supports providing OpenIDs:
http://ww.wp.xz.cn/extend/plugins/openid/other_notes/
