Non-admin users cannot overwrite their own documents

• Type: Bug
• Status: Closed
• Resolution: No Longer Reproducible
• Affects Version/s: 2.0.5 CE
• Fix Version/s: 2.1.X CE, 2.1.0 EE GA3
• Component/s: Social Office Dashboard, Social Office Dashboard > My Documents, Social Office Site > Documents
• Labels: None
• Fix Priority: 4
• Affects Portal Version/s:
  6.1.2 CE GA3

A non-admin user is not allowed to edit one of his documents by uploading a new version.

Steps to reproduce it:
1) go to Document and Media portlet
2) add a document (tested with PDF and JPEG)
3) edit the document just published
4) select a different file
5) publish
6) you will get the error "Documents and Media is temporarily unavailable."

In the logs you see:

16:08:41,475 ERROR [qtp1311760211-606][ExpandoBridgeImpl:604] com.liferay.portal.security.auth.PrincipalException
com.liferay.portal.security.auth.PrincipalException
at com.liferay.portlet.expando.service.permission.ExpandoColumnPermissionImpl.check(ExpandoColumnPermissionImpl.java:36)

[...]

16:08:41,511 ERROR [qtp1311760211-606][render_portlet_jsp:157] java.lang.NullPointerException
at com.liferay.portlet.expando.model.impl.ExpandoBridgeImpl.equals(ExpandoBridgeImpl.java:114)

Workaround: give User role the "view" permissions to Custom Field "manualCheckInRequired"
1) go to Control Panel > Custom fields
2) select "manualCheckInRequired" (Documents and Media asset type)
3) check User-View checkbox
4) save