title: Grails openid plugin 2.0.0 RC1: getting "No such property: User exception"
body: <p>Installed <a href="http://grails.org/plugin/spring-security-openid" rel="nofollow">openid plugin</a> 2.0.0 RC1 to my grails application, but I'm getting 
  No such property: User exception. Can someone suggest what should be done?</p>
  
  <pre><code>| Error 2013-10-28 00:11:55,169 [http-bio-8080-exec-6] ERROR errors.GrailsExceptionResolver  - MissingPropertyException occurred when processing request: [POST] /Test/login/openIdCreateAccount - parameters:
  username: valid_gmail@gmail.com
  password2: ***
  password: ***
  No such property: User for class: grails.plugin.springsecurity.openid.OpenIdRegisterCommand. Stacktrace follows:
  Message: No such property: User for class: grails.plugin.springsecurity.openid.OpenIdRegisterCommand
     Line | Method
  -&gt;&gt; 265 | doCall   in grails.plugin.springsecurity.openid.OpenIdRegisterCommand$__clinit__closure1_closure2
  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
  |   195 | doFilter in grails.plugin.cache.web.filter.PageFragmentCachingFilter
  |    63 | doFilter in grails.plugin.cache.web.filter.AbstractFilter
  |    53 | doFilter in grails.plugin.springsecurity.web.filter.GrailsAnonymousAuthenticationFilter
  |    49 | doFilter in grails.plugin.springsecurity.web.authentication.RequestHolderAuthenticationFilter
  |    82 | doFilter in grails.plugin.springsecurity.web.authentication.logout.MutableLogoutFilter
  |   895 | runTask  in java.util.concurrent.ThreadPoolExecutor$Worker
  |   918 | run      in     ''
  ^   695 | run . .  in java.lang.Thread
  </code></pre>