Index: lams_monitoring/web/includes/javascript/monitorLesson.js
===================================================================
diff -u -r6ea52c47664df489d5d3d64115828c0eef4a1426 -ra372388dfa06af732cb77332e499d3b1d00f2294
--- lams_monitoring/web/includes/javascript/monitorLesson.js	(.../monitorLesson.js)	(revision 6ea52c47664df489d5d3d64115828c0eef4a1426)
+++ lams_monitoring/web/includes/javascript/monitorLesson.js	(.../monitorLesson.js)	(revision a372388dfa06af732cb77332e499d3b1d00f2294)
@@ -1198,6 +1198,14 @@
  * Extracts activity using SVG attributes.
  */
 function getActivityCoordinates(activity){
+	// fix missing coordinates, not set by Flash Authoring
+	if (!activity.x) {
+		activity.x = 0;
+	}
+	if (!activity.y) {
+		activity.y = 0;
+	}
+	
 	// special processing for gates
 	if ([3,4,5,14].indexOf(activity.type) > -1) {
 		return {