Index: lams_monitoring/web/includes/javascript/monitorLesson.js
===================================================================
diff -u -r8697dc33eefb5888cfba47cf957c7b7eeed78d96 -r4d5b9a09299a701f991c760b83290647b2d8a1b3
--- lams_monitoring/web/includes/javascript/monitorLesson.js	(.../monitorLesson.js)	(revision 8697dc33eefb5888cfba47cf957c7b7eeed78d96)
+++ lams_monitoring/web/includes/javascript/monitorLesson.js	(.../monitorLesson.js)	(revision 4d5b9a09299a701f991c760b83290647b2d8a1b3)
@@ -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 {