diff --git a/common/static/js/vendor/ova/OpenSeaDragonAnnotation.js b/common/static/js/vendor/ova/OpenSeaDragonAnnotation.js
index 950718f337..a3da590ca3 100644
--- a/common/static/js/vendor/ova/OpenSeaDragonAnnotation.js
+++ b/common/static/js/vendor/ova/OpenSeaDragonAnnotation.js
@@ -582,7 +582,9 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
             // the id is a substring of the thumbnail, which according to OpenSeaDragon API should be the case.
             var sourceId = this.viewer.source['@id'];
             var targetThumb = an.target.thumb;
-            if (isContainer) isSource = (targetThumb.indexOf(sourceId) !== -1);            
+            if (isContainer) {
+                isSource = (targetThumb.indexOf(sourceId) !== -1);
+            }            
             return (isOpenSeaDragon && isContainer && isImage && isRP && isSource);
         },
         
diff --git a/common/static/js/vendor/ova/catch/js/catch.js b/common/static/js/vendor/ova/catch/js/catch.js
index 1711c1b44c..75f037fc8d 100644
--- a/common/static/js/vendor/ova/catch/js/catch.js
+++ b/common/static/js/vendor/ova/catch/js/catch.js
@@ -874,7 +874,9 @@ CatchAnnotation.prototype = {
             var an = allannotations[item];
             // Makes sure that all images are set to transparent in case one was
             // previously selected.
-            an.highlights[0].style.background = "rgba(0, 0, 0, 0)";
+            if (an.highlights) {
+               an.highlights[0].style.background = "rgba(0, 0, 0, 0)";
+            }
             if (typeof an.id !== 'undefined' && an.id === osdaId) { // this is the annotation
                 var bounds = new OpenSeadragon.Rect(an.bounds.x, an.bounds.y, an.bounds.width, an.bounds.height);
                 osda.viewer.viewport.fitBounds(bounds, false);
@@ -883,7 +885,9 @@ CatchAnnotation.prototype = {
                                         'slow');
                 // signifies a selected annotation once OSD has zoomed in on the
                 // appropriate area, it turns the background a bit yellow
-                an.highlights[0].style.background = "rgba(255, 255, 10, 0.2)";
+                if (an.highlights !== undefined) {
+                    an.highlights[0].style.background = "rgba(255, 255, 10, 0.2)";
+                }
             }
         }
     },
@@ -912,7 +916,7 @@ CatchAnnotation.prototype = {
                             startOffset = hasRanges?an.ranges[0].startOffset:'',
                             endOffset = hasRanges?an.ranges[0].endOffset:'';
 
-                        if (typeof startOffset !== 'undefined' && typeof endOffset !== 'undefined') { 
+                        if (typeof startOffset !== 'undefined' && typeof endOffset !== 'undefined' && typeof an.highlights) { 
 
                             $(an.highlights).parent().find('.annotator-hl').removeClass('api'); 
                             // change the color