Index: lams_central/web/includes/javascript/authoring/authoringGeneral.js
===================================================================
diff -u -r1eb4d9e4cdd22f6426efa3c0ac47bffd766833fa -rc533e39408307e37e461d696c20159118aeda394
--- lams_central/web/includes/javascript/authoring/authoringGeneral.js	(.../authoringGeneral.js)	(revision 1eb4d9e4cdd22f6426efa3c0ac47bffd766833fa)
+++ lams_central/web/includes/javascript/authoring/authoringGeneral.js	(.../authoringGeneral.js)	(revision c533e39408307e37e461d696c20159118aeda394)
@@ -1,4 +1,4 @@
-/**
+/**
  * This file contains main methods for Authoring.
  */
 
@@ -2974,7 +2974,7 @@
 		var systemGate = ld.systemGate,
 			// final success/failure of the save
 			result = false;
-		
+			
 		// it is null if it is a new sequence
 		ld.learningDesignID	= learningDesignID;
 		ld.workspaceFolderID = folderID;
@@ -3003,6 +3003,9 @@
 				layout.ld.title = title;
 				layout.ld.invalid = response.validation.length > 0;
 				
+				var wasReadOnly = layout.ld.readOnly;
+				layout.ld.readOnly = ld.readOnly;
+				
 				// check if there were any validation errors
 				if (layout.ld.invalid) {
 					var message = LABELS.SEQUENCE_VALIDATION_ISSUES + '<br/>';
@@ -3095,9 +3098,14 @@
 						return;
 					}
 					
-					var svgSaveSuccessful = GeneralLib.saveLearningDesignImage();
-					if (!svgSaveSuccessful) {
-						layout.infoDialog.data('show')(LABELS.SVG_SAVE_ERROR);
+					if (wasReadOnly === layout.ld.readOnly) {
+						// If read-only-ness has changed, then current activities colouring does not reflect its real state.
+						// In this case do not generate the image at all.
+						// It will be either created after next save in authoring or regenerated on-the-fly in Add Lesson or Monitoring.
+						var svgSaveSuccessful = GeneralLib.saveLearningDesignImage();
+						if (!svgSaveSuccessful) {
+							layout.infoDialog.data('show')(LABELS.SVG_SAVE_ERROR);
+						}
 					}
 					
 					if (!layout.ld.invalid) {