@@ -2739,9 +2739,11 @@ private void removeSpacesFromCode() {
    * Replace all numbers with variables and add code to initialize
    * these variables and handle update messages.
    */
-  protected boolean automateSketch(Sketch sketch, List<List<Handle>> handles) {
+  protected boolean automateSketch(Sketch sketch, SketchParser parser) {
     SketchCode[] code = sketch.getCode();
 
+    List<List<Handle>> handles = parser.allHandles;
+    
     if (code.length < 1) {
       return false;
     }
@@ -2793,7 +2795,7 @@ protected boolean automateSketch(Sketch sketch, List<List<Handle>> handles) {
       }
       code[tab].setProgram(c);
     }
-
+    
     // add the main header to the code in the first tab
     String c = code[0].getProgram();
 
 
@@ -167,7 +167,6 @@ public Runner handleTweak(Sketch sketch,
                             RunnerListener listener,
                             final boolean present) throws SketchException {
     final JavaEditor editor = (JavaEditor)listener;
-    boolean launchInteractive = false;
 
     if (isSketchModified(sketch)) {
       editor.deactivateRun();
@@ -193,7 +192,7 @@ public Runner handleTweak(Sketch sketch,
     final SketchParser parser = new SketchParser(editor.baseCode, requiresTweak);
 
     // add our code to the sketch
-    launchInteractive = editor.automateSketch(sketch, parser.allHandles);
+    final boolean launchInteractive = editor.automateSketch(sketch, parser);
 
     build = new JavaBuild(sketch);
     appletClassName = build.build(false);
@@ -204,8 +203,10 @@ public Runner handleTweak(Sketch sketch,
           public void run() {
             runtime.launch(present);  // this blocks until finished
             // next lines are executed when the sketch quits
-            editor.initEditorCode(parser.allHandles, false);
-            editor.stopInteractiveMode(parser.allHandles);
+            if (launchInteractive) {
+                editor.initEditorCode(parser.allHandles, false);
+                editor.stopInteractiveMode(parser.allHandles);
+            }
           }
         }).start();
Original file line number	Diff line number	Diff line change
@@ -2739,9 +2739,11 @@ private void removeSpacesFromCode() {
2739	2739	* Replace all numbers with variables and add code to initialize
2740	2740	* these variables and handle update messages.
2741	2741	*/
2742		- protected boolean automateSketch(Sketch sketch, List<List<Handle>> handles) {
	2742	+ protected boolean automateSketch(Sketch sketch, SketchParser parser) {
2743	2743	SketchCode[] code = sketch.getCode();
2744	2744
	2745	+ List<List<Handle>> handles = parser.allHandles;
	2746	+
2745	2747	if (code.length < 1) {
2746	2748	return false;
2747	2749	}
@@ -2793,7 +2795,7 @@ protected boolean automateSketch(Sketch sketch, List<List<Handle>> handles) {
2793	2795	}
2794	2796	code[tab].setProgram(c);
2795	2797	}
2796		-
	2798	+
2797	2799	// add the main header to the code in the first tab
2798	2800	String c = code[0].getProgram();
2799	2801