Fix bug where changing object visibility didn't first check for view layer existence.

src/blenderbim/blenderbim/bim/module/bcf/operator.py

@@ -940,7 +940,7 @@ class ActivateBcfViewpoint(bpy.types.Operator):
             context.area.type = old
             for global_id in exception_global_ids:
                 obj = IfcStore.get_element(global_id)
-                if obj:
+                if obj and bpy.context.view_layer.objects.get(obj.name):
                     obj.hide_set(True)
         else:
             objs = []

src/blenderbim/blenderbim/bim/module/drawing/operator.py

@@ -288,8 +288,9 @@ class CreateDrawing(bpy.types.Operator):
         else:
             previous_visibility = {}
             for obj in self.camera.users_collection[0].objects:
-                previous_visibility[obj.name] = obj.hide_get()
+                if bpy.context.view_layer.objects.get(obj.name):
-                obj.hide_set(True)
+                    previous_visibility[obj.name] = obj.hide_get()
+                    obj.hide_set(True)
             for obj in context.visible_objects:
                 if (
                     (not obj.data and not obj.instance_collection)
@@ -298,8 +299,9 @@ class CreateDrawing(bpy.types.Operator):
                     or "IfcGridAxis/" in obj.name
                     or "IfcOpeningElement/" in obj.name
                 ):
-                    previous_visibility[obj.name] = obj.hide_get()
+                    if bpy.context.view_layer.objects.get(obj.name):
-                    obj.hide_set(True)
+                        previous_visibility[obj.name] = obj.hide_get()
+                        obj.hide_set(True)
 
             space = self.get_view_3d(context.screen.areas)
             previous_shading = space.shading.type

src/blenderbim/blenderbim/bim/module/pset/qto_calculator.py

@@ -895,7 +895,8 @@ class QtoCalculator:
 
         # add object to scene collection and then hide them.
         collection.objects.get(new_OBB_object.name, collection.objects.link(new_OBB_object))
-        new_OBB_object.hide_set(True)
+        if bpy.context.view_layer.objects.get(new_OBB_object.name):
+            new_OBB_object.hide_set(True)
 
         return new_OBB_object
 
@@ -948,7 +949,8 @@ class QtoCalculator:
 
         # add object to scene collection and then hide them.
         collection.objects.link(new_AABB_object)
-        new_AABB_object.hide_set(True)
+        if bpy.context.view_layer.objects.get(new_AABB_object.name):
+            new_AABB_object.hide_set(True)
 
         return new_AABB_object
 
@@ -992,7 +994,8 @@ class QtoCalculator:
         bpy.ops.mesh.select_all(action="SELECT")
         bpy.ops.mesh.bisect(plane_co=plane_co_neg, plane_no=plane_no_neg, use_fill=True, clear_outer=True)
         bpy.ops.object.editmode_toggle()
-        bis_obj.hide_set(True)
+        if bpy.context.view_layer.objects.get(bis_obj.name):
+            bis_obj.hide_set(True)
 
         return bis_obj
 

src/blenderbim/blenderbim/tool/drawing.py

@@ -1424,8 +1424,9 @@ class Drawing(blenderbim.core.tool.Drawing):
         bpy.ops.object.hide_view_clear()
 
         for hidden_obj in hidden_objs:
-            hidden_obj.hide_set(True)
+            if bpy.context.view_layer.objects.get(hidden_obj.name):
-            hidden_obj.hide_render = True
+                hidden_obj.hide_set(True)
+                hidden_obj.hide_render = True
 
         subcontexts = []
         target_view = cls.get_drawing_target_view(drawing)

src/blenderbim/blenderbim/tool/spatial.py

@@ -139,7 +139,7 @@ class Spatial(blenderbim.core.tool.Spatial):
         bpy.ops.object.select_all(action="DESELECT")
         for product in products:
             obj = tool.Ifc.get_object(product)
-            if obj:
+            if obj and bpy.context.view_layer.objects.get(obj.name):
                 obj.select_set(True)
                 if unhide:
                     obj.hide_set(False)
@@ -150,12 +150,12 @@ class Spatial(blenderbim.core.tool.Spatial):
         if action == "select":
             [obj.select_set(True) for obj in objects]
         elif action == "isolate":
-            [obj.hide_set(False) for obj in objects]
+            [obj.hide_set(False) for obj in objects if bpy.context.view_layer.objects.get(obj.name)]
-            [obj.hide_set(True) for obj in bpy.context.visible_objects if not obj in objects]  # this is slow
+            [obj.hide_set(True) for obj in bpy.context.visible_objects if not obj in objects and bpy.context.view_layer.objects.get(obj.name)]  # this is slow
         elif action == "unhide":
-            [obj.hide_set(False) for obj in objects]
+            [obj.hide_set(False) for obj in objects if bpy.context.view_layer.objects.get(obj.name)]
         elif action == "hide":
-            [obj.hide_set(True) for obj in objects]
+            [obj.hide_set(True) for obj in objects if bpy.context.view_layer.objects.get(obj.name)]
 
     @classmethod
     def deselect_objects(cls):
@@ -164,7 +164,7 @@ class Spatial(blenderbim.core.tool.Spatial):
 
     @classmethod
     def show_scene_objects(cls):
-        [obj.hide_set(False) for obj in bpy.data.scenes["Scene"].objects]
+        [obj.hide_set(False) for obj in bpy.data.scenes["Scene"].objects if bpy.context.view_layer.objects.get(obj.name)]
 
     @classmethod
     def get_selected_products(cls):