app/javascript/spotlight/admin/multi_image_selector.js in blacklight-spotlight-4.0.1 vs app/javascript/spotlight/admin/multi_image_selector.js in blacklight-spotlight-4.0.2

@@ -64,10 +64,10 @@
       var viewportWidth = thumbsListContainer.width();
       var width = 0;
       $('li', thumbList).each(function(){
         var thisThumb  = $(this),
             image      = $('img', thisThumb),
-            totalWidth = width += thisThumb.width();
+            totalWidth = width += thisThumb.width(),
             position   = (thumbList.position().left + totalWidth) - thisThumb.width();
 
         if(position >= 0 && position < viewportWidth) {
           image.prop('src', image.data('src'));
         }