diff --git a/src/app_controller.py b/src/app_controller.py
index 548f431a..1d35b11f 100644
--- a/src/app_controller.py
+++ b/src/app_controller.py
@@ -1181,6 +1181,7 @@ class AppController:
     '_project_switch_error':             '_project_switch_error',
     'active_project_path':               'active_project_path',
    })
+  self.context_preset_manager  = ContextPresetManager()
   self.perf_monitor            = performance_monitor.get_monitor()
   self._perf_profiling_enabled = False
   self._gui_task_handlers: Dict[str, Callable] = {