Index: lams_monitoring/web/includes/javascript/monitorLesson.js
===================================================================
diff -u -r644138880b05916dfc4855db03f2d87a7eea7eb7 -r5719fa73eff88059e8e143e835c8fc214a9a1f66
--- lams_monitoring/web/includes/javascript/monitorLesson.js	(.../monitorLesson.js)	(revision 644138880b05916dfc4855db03f2d87a7eea7eb7)
+++ lams_monitoring/web/includes/javascript/monitorLesson.js	(.../monitorLesson.js)	(revision 5719fa73eff88059e8e143e835c8fc214a9a1f66)
@@ -2125,8 +2125,14 @@
  * Adjusts sequence canvas (SVG) based on space available in the dialog.
  */
 function resizeSequenceCanvas(width, height){
-	var svg = $('svg.svg-learning-design', sequenceCanvas),
-		viewBoxParts = svg.attr('viewBox').split(' '),
+	var svg = $('svg.svg-learning-design', sequenceCanvas);
+	
+	if (svg.length === 0){
+		// skip resizing if the SVG has not loaded (yet)
+		return;
+	}
+	
+	var viewBoxParts = svg.attr('viewBox').split(' '),
 		svgHeight = +viewBoxParts[3],
 		sequenceCanvasHeight = learningDesignSvgFitScreen ? height - 140 : Math.max(svgHeight + 10, height - 140);
 	
Index: lams_monitoring/web/monitor.jsp
===================================================================
diff -u -r690d00ae44b2fbc84229146c93a36cd968b55c0a -r5719fa73eff88059e8e143e835c8fc214a9a1f66
--- lams_monitoring/web/monitor.jsp	(.../monitor.jsp)	(revision 690d00ae44b2fbc84229146c93a36cd968b55c0a)
+++ lams_monitoring/web/monitor.jsp	(.../monitor.jsp)	(revision 5719fa73eff88059e8e143e835c8fc214a9a1f66)
@@ -247,9 +247,10 @@
 				initSequenceTab();
 				initLearnersTab();
 				initGradebookTab();
-				refreshMonitor();
 			}
 
+			refreshMonitor();
+
 			// remove "loading..." screen
 			$('#loadingOverlay').remove();
 		});