fixed exporting media only for a single scene

HISTORY.md

@@ -8,6 +8,9 @@
 * **Notable Fixes:**
     * made scrollbars in the wardrobe and jukebox more responsive
 
+### 2021-05-18
+* gui: fixed exporting media only for a single scene
+
 ### 2021-05-11
 * gui: add multi-scene projects 
 * gui: adjusted scene album rendering

snap.html

@@ -12,7 +12,7 @@
         <script src="src/threads.js?version=2021-04-17"></script>
         <script src="src/objects.js?version=2021-04-23"></script>
         <script src="src/scenes.js?version=2021-04-23"></script>
-        <script src="src/gui.js?version=2021-05-11"></script>
+        <script src="src/gui.js?version=2021-05-18"></script>
         <script src="src/paint.js?version=2021-03-17"></script>
         <script src="src/lists.js?version=2021-03-15"></script>
         <script src="src/byob.js?version=2021-05-04"></script>

src/gui.js

@@ -83,7 +83,7 @@ Animation, BoxMorph, BlockEditorMorph, BlockDialogMorph, Project, ZERO, BLACK*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.gui = '2021-May-11';
+modules.gui = '2021-May-18';
 
 // Declarations
 
@@ -6626,6 +6626,7 @@ IDE_Morph.prototype.exportProjectMedia = function (name) {
         this.setProjectName(name);
         try {
             menu = this.showMessage('Exporting');
+            this.serializer.serialize(this.scene);
             media = this.serializer.mediaXML(name);
             this.saveXMLAs(media, this.projectName + ' media');
             menu.destroy();