title: Liferay ExpandoBridge PrincipalException
body: <p>I have added a Custom Field named HomeTown under ControlPanel  , set all the permissions to it .</p>
  
  <p>Created a Hook for adding Hometown under th create_account.jsp page .</p>
  
  <p>Now when i am able to set the value of the hometown under the ExtUserLocalService class , i am getting the below exception </p>
  
  <pre><code>11:16:22,858 ERROR [http-bio-8080-exec-72][ExpandoBridgeImpl:507] com.liferay.portal.security.auth.PrincipalException
  com.liferay.portal.security.auth.PrincipalException
      at com.liferay.portlet.expando.service.permission.ExpandoColumnPermissionImpl.check(ExpandoColumnPermissionImpl.java:36)
  </code></pre>
  
  <p>I have googled for it and found out that this is related to the Permission Issue .</p>
  
  <p>I am new to liferay , could anybody please tell me how to resolve this ??</p>
  
  <p>Thank you very much .</p>