Index: lams_central/web/lams_authoring.swf
===================================================================
diff -u -ra36df8bbc3b9245e620cca61db706bc33bc727af -rb702dd3f3a7d6e7e5c8af1e240aee8e1ee2edeed
Binary files differ
Index: lams_central/web/lams_authoring_library.swf
===================================================================
diff -u -ra36df8bbc3b9245e620cca61db706bc33bc727af -rb702dd3f3a7d6e7e5c8af1e240aee8e1ee2edeed
Binary files differ
Index: lams_flash/src/central/flash/org/lamsfoundation/lams/authoring/cv/CanvasController.as
===================================================================
diff -u -r0ab01b8b8bfbc35cb16b758be6b36c9af4091d3b -rb702dd3f3a7d6e7e5c8af1e240aee8e1ee2edeed
--- lams_flash/src/central/flash/org/lamsfoundation/lams/authoring/cv/CanvasController.as	(.../CanvasController.as)	(revision 0ab01b8b8bfbc35cb16b758be6b36c9af4091d3b)
+++ lams_flash/src/central/flash/org/lamsfoundation/lams/authoring/cv/CanvasController.as	(.../CanvasController.as)	(revision b702dd3f3a7d6e7e5c8af1e240aee8e1ee2edeed)
@@ -190,10 +190,40 @@
 									LFMessage.showMessageAlert(msg);
 								} else {
 									Debugger.log("sequence based: " + optionalOnCanvas[i].activity.isSequenceBased, Debugger.CRITICAL, "activityRelease", "CanvasController");
+									
+									var optionalX:Number = optionalOnCanvas[i].activity.xCoord;
+									var optionalY:Number = optionalOnCanvas[i].activity.yCoord;
+									var iconMouseX = _xmouse - _canvasModel.getPosition().x;
+									var iconMouseY = _ymouse - _canvasModel.getPosition().y;
+									
 									if(optionalOnCanvas[i].activity.isSequenceBased) {
+										
 										// test mouse ptr 
-										var dropTarget:Object = eval(ca._droptarget);
+										var _children:Array = optionalOnCanvas[i].children;
+										var selectedSequence:MovieClip = null;
+										var mouseX = iconMouseX - optionalX;
+										var mouseY = iconMouseY - optionalY;
 										
+										for(var j=0; j<_children.length; j++) {
+											if(mouseX >= _children[j].activity.xCoord && 
+											   mouseX <= (_children[j].activity.xCoord + _children[j]._width) &&
+											   mouseY >= _children[j].activity.yCoord && 
+											   mouseY <= (_children[j].activity.yCoord + _children[j]._height))
+												selectedSequence = _children[j];
+										}
+										
+										if(selectedSequence != null) {
+											_canvasModel.addParentToActivity(selectedSequence.activity.activityUIID, ca, false);
+											CanvasSequenceActivity(selectedSequence).updateChildren();
+											CanvasOptionalActivity(_canvasModel.activitiesDisplayed.get(selectedSequence.activity.parentUIID)).updateChildren();
+										} else {
+											activitySnapBack(ca);
+											var msg:String = Dictionary.getValue('activityDrop_optSequence_error_msg');
+											LFMessage.showMessageAlert(msg);
+										}
+										
+										/**var dropTarget:Object = eval(ca._droptarget);
+										
 										if(dropTarget._parent instanceof CanvasSequenceActivity) {
 											_canvasModel.addParentToActivity(dropTarget._parent.activity.activityUIID, ca, false);
 											CanvasSequenceActivity(dropTarget._parent).updateChildren();
@@ -202,6 +232,7 @@
 											var msg:String = Dictionary.getValue('activityDrop_optSequence_error_msg');
 											LFMessage.showMessageAlert(msg);
 										}
+										*/
 										
 									} else {
 										_canvasModel.addParentToActivity(optionalOnCanvas[i].activity.activityUIID, ca, false);
Index: lams_flash/src/central/flash/org/lamsfoundation/lams/authoring/cv/CanvasOptionalActivity.as
===================================================================
diff -u -rdee8f3e886e170f502a05d559769c4fff6cdf291 -rb702dd3f3a7d6e7e5c8af1e240aee8e1ee2edeed
--- lams_flash/src/central/flash/org/lamsfoundation/lams/authoring/cv/CanvasOptionalActivity.as	(.../CanvasOptionalActivity.as)	(revision dee8f3e886e170f502a05d559769c4fff6cdf291)
+++ lams_flash/src/central/flash/org/lamsfoundation/lams/authoring/cv/CanvasOptionalActivity.as	(.../CanvasOptionalActivity.as)	(revision b702dd3f3a7d6e7e5c8af1e240aee8e1ee2edeed)
@@ -230,7 +230,7 @@
 	public function updateChildren(newChildren:Array):Void {
 		_visible = false;
 		_visibleWidth = CONTAINER_PANEL_W;
-		_children = newChildren;
+		if(newChildren != null) _children = newChildren;
 		
 		init();
 	}
Index: lams_flash/src/central/flash/org/lamsfoundation/lams/authoring/cv/CanvasSequenceActivity.as
===================================================================
diff -u -r0ab01b8b8bfbc35cb16b758be6b36c9af4091d3b -rb702dd3f3a7d6e7e5c8af1e240aee8e1ee2edeed
--- lams_flash/src/central/flash/org/lamsfoundation/lams/authoring/cv/CanvasSequenceActivity.as	(.../CanvasSequenceActivity.as)	(revision 0ab01b8b8bfbc35cb16b758be6b36c9af4091d3b)
+++ lams_flash/src/central/flash/org/lamsfoundation/lams/authoring/cv/CanvasSequenceActivity.as	(.../CanvasSequenceActivity.as)	(revision b702dd3f3a7d6e7e5c8af1e240aee8e1ee2edeed)
@@ -178,7 +178,7 @@
 		
 		}
 		
-		var _newVisibleWidth = (_children.length*CHILD_INCRE) + (CHILD_OFFSET_X*2) + 6;
+		var _newVisibleWidth:Number = (_children.length*CHILD_INCRE) + (CHILD_OFFSET_X*2) + 6;
 		if(_newVisibleWidth > CanvasSequenceActivity.TOOL_ACTIVITY_WIDTH)
 			_visibleWidth = _newVisibleWidth;