prepare for new version

project_manager.py

@@ -336,7 +336,7 @@ class ProjectManager:
 
             has_data = any(len(getattr(app, item["key"], {})) > 0 for item in DATA_SCHEMA)
             if hasattr(app, "button1"):
-                app.button1.setVisible(not has_data)
+                app.button1.setVisible(has_data)
             if hasattr(app, "button3"):
                 app.button3.setVisible(has_data)