Index: lams_common/src/java/org/lamsfoundation/lams/rating/service/RatingService.java
===================================================================
RCS file: /usr/local/cvsroot/lams_common/src/java/org/lamsfoundation/lams/rating/service/RatingService.java,v
diff -u -r1.1.2.10 -r1.1.2.11
--- lams_common/src/java/org/lamsfoundation/lams/rating/service/RatingService.java	16 Nov 2016 04:16:02 -0000	1.1.2.10
+++ lams_common/src/java/org/lamsfoundation/lams/rating/service/RatingService.java	28 Nov 2016 02:51:11 -0000	1.1.2.11
@@ -193,6 +193,11 @@
     public List<ItemRatingDTO> getRatingCriteriaDtos(Long contentId, Collection<Long> itemIds,
 	    boolean isCommentsByOtherUsersRequired, Long userId) {
 
+	// fail safe - if there are no items, don't try to look anything up! LDEV-4094
+	if ( itemIds == null || itemIds.isEmpty() ) {
+	    return new LinkedList<ItemRatingDTO>();
+	}
+
 	//initial preparations
 	NumberFormat numberFormat = NumberFormat.getInstance(Locale.US);
 	numberFormat.setMaximumFractionDigits(1);