Index: lams_central/src/java/org/lamsfoundation/lams/web/HomeAction.java
===================================================================
diff -u -r8a6945700087134d2cebe7582998199fbad7e029 -r36dd2823903c77fa92c86c250184cc96a932c383
--- lams_central/src/java/org/lamsfoundation/lams/web/HomeAction.java	(.../HomeAction.java)	(revision 8a6945700087134d2cebe7582998199fbad7e029)
+++ lams_central/src/java/org/lamsfoundation/lams/web/HomeAction.java	(.../HomeAction.java)	(revision 36dd2823903c77fa92c86c250184cc96a932c383)
@@ -53,6 +53,7 @@
 import org.jdom.JDOMException;
 import org.lamsfoundation.lams.contentrepository.RepositoryCheckedException;
 import org.lamsfoundation.lams.learningdesign.GroupUser;
+import org.lamsfoundation.lams.learningdesign.LearningDesign;
 import org.lamsfoundation.lams.learningdesign.dao.IGroupUserDAO;
 import org.lamsfoundation.lams.learningdesign.service.ILearningDesignService;
 import org.lamsfoundation.lams.lesson.Lesson;
@@ -473,10 +474,16 @@
 			WorkspaceFolder.RUN_SEQUENCES.equals(folderContent.getResourceTypeID().intValue()));
 		result.append("folders", subfolder);
 	    } else if (FolderContentDTO.DESIGN.equals(contentType)) {
-		JSONObject learningDesign = new JSONObject();
-		learningDesign.put("learningDesignId", folderContent.getResourceID());
-		learningDesign.put("name", folderContent.getName());
-		result.append("learningDesigns", learningDesign);
+		Long learningDesignID = folderContent.getResourceID();
+		LearningDesign learningDesign = (LearningDesign) getService().findById(LearningDesign.class,
+			learningDesignID);
+		// use only valid designs
+		if (learningDesign != null && learningDesign.getValidDesign()) {
+		    JSONObject learningDesignJSON = new JSONObject();
+		    learningDesignJSON.put("learningDesignId", learningDesignID);
+		    learningDesignJSON.put("name", folderContent.getName());
+		    result.append("learningDesigns", learningDesignJSON);
+		}
 	    } else {
 		if (HomeAction.log.isDebugEnabled()) {
 		    HomeAction.log.debug("Unsupported folder content found, named \"" + folderContent.getName() + "\"");