diff --git a/flatcamEditors/FlatCAMExcEditor.py b/flatcamEditors/FlatCAMExcEditor.py
index 41c1be95..73ee3fbb 100644
--- a/flatcamEditors/FlatCAMExcEditor.py
+++ b/flatcamEditors/FlatCAMExcEditor.py
@@ -1568,7 +1568,16 @@ class FlatCAMExcEditor(QtCore.QObject):
     def activate(self):
         self.connect_canvas_event_handlers()
 
-        # self.app.collection.view.keyPressed.connect(self.on_canvas_key)
+        # initialize working objects
+        self.storage_dict = {}
+        self.current_storage = []
+        self.points_edit = {}
+        self.sorted_diameters = []
+        self.new_drills = []
+        self.new_tools = {}
+        self.new_slots = {}
+        self.new_tool_offset = {}
+        self.olddia_newdia = {}
 
         self.shapes.enabled = True
         self.tool_shape.enabled = True
diff --git a/flatcamEditors/FlatCAMGeoEditor.py b/flatcamEditors/FlatCAMGeoEditor.py
index 3caed9bb..07639a18 100644
--- a/flatcamEditors/FlatCAMGeoEditor.py
+++ b/flatcamEditors/FlatCAMGeoEditor.py
@@ -2833,6 +2833,12 @@ class FlatCAMGeoEditor(QtCore.QObject):
 
     def activate(self):
         self.connect_canvas_event_handlers()
+
+        # initialize working objects
+        self.storage = FlatCAMGeoEditor.make_storage()
+        self.utility = []
+        self.selected = []
+
         self.shapes.enabled = True
         self.tool_shape.enabled = True
         self.app.app_cursor.enabled = True
diff --git a/flatcamEditors/FlatCAMGrbEditor.py b/flatcamEditors/FlatCAMGrbEditor.py
index 193954fe..1d6351c3 100644
--- a/flatcamEditors/FlatCAMGrbEditor.py
+++ b/flatcamEditors/FlatCAMGrbEditor.py
@@ -1114,11 +1114,18 @@ class FlatCAMGrbEditor(QtCore.QObject):
     def activate(self):
         self.connect_canvas_event_handlers()
 
-        # self.app.collection.view.keyPressed.connect(self.on_canvas_key)
+        # init working objects
+        self.storage_dict = {}
+        self.current_storage = []
+        self.sorted_apid = []
+        self.new_apertures = {}
+        self.new_aperture_macros = {}
+        self.grb_plot_promises = []
+        self.olddia_newdia = {}
+        self.tool2tooldia = {}
 
         self.shapes.enabled = True
         self.tool_shape.enabled = True
-        # self.app.app_cursor.enabled = True
 
         self.app.ui.snap_max_dist_entry.setEnabled(True)
         self.app.ui.corner_snap_btn.setEnabled(True)