Update core/app.py

core/app.py

@@ -80,7 +80,7 @@ def __init__(self):
         self.memory_manager = MemoryManager(self.device_manager.get_optimal_device())
         self.model_loader = ModelLoader(self.device_manager, self.memory_manager)
         self.audio_processor = AudioProcessor()
-        self.progress_tracker = ProgressTracker()
+        self.progress_tracker = None
         
         # Initialize core processor (will be set up after models load)
         self.core_processor = None