Merged V2.1 to HEAD

6580: AVM bulk import performance tweaks.
   6582: WCM-767, WCM-768
   6583: Fix for AWC-1528 (potential NPE in ErrorsRenderer)
   6584: Fix for AWC-1256 (Links produced by inline HTML editor are incorrect)
   6585: AR-1635: event listeners added in a beforeCommit event are now executed successfully
   6586: AR-1561 Update Web Scripts readme.html to be consistent with "Category Search Sample" (or vice-versa)
   6587: Fix for AWC-1390 (Paste all doesn't work for forum items)
   6588: AR-1701 Script getDocument call doesn't check for non-existent content
   6589: Fix for AWC-1530 - Saved search does not work for custom properties of type d:text with list constraint
   6591: Improvement for submit speed.
   6592: Removed obsolete tests.
   6594: Index tracking sample to include AVM index tracking
   6595: Added the AVM helpers methods from the FreeMarker AVM API that were missing from the JavaScript API
   6597: Rationalize post commit execution hooks for deployment receiver
   6598: Properly escape path names for ProgramRunnable.
   6599: AVM store name lookup cache is (theoretically) clusterable.
   6600: Some or other gramatically incorrect stuff about Chiba.
   6601: Fix for AR-1121 and AR-1673
   6602: AR-1655: Versioning is not MLText aware
   6603: Updated messages from lang packs
   6604: Fixed AR-1476: JCR import end element escaping
   6605: Updated Japanese lang messages


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@6746 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/web/scripts/RepoStore.java

@@ -394,6 +394,10 @@ public class RepoStore implements WebScriptStore, ApplicationContextAware, Appli
                             throw new IOException("Document " + documentPath + " does not exist.");
                         }
                         ContentReader reader = contentService.getReader(nodeRef, ContentModel.PROP_CONTENT);
+                        if (reader == null || !reader.exists())
+                        {
+                            throw new IOException("Failed to read content at " + documentPath + " (content reader does not exist)");
+                        }
                         return reader.getContentInputStream();
                     }
                 });