5 files changed, 23 insertions, 2 deletions
diff --git a/source/blender/blenkernel/BKE_context.h b/source/blender/blenkernel/BKE_context.h
index e50c33e258c..12525fe9a50 100644
--- a/source/blender/blenkernel/BKE_context.h
+++ b/source/blender/blenkernel/BKE_context.h
@@ -322,6 +322,11 @@ int CTX_data_editable_gpencil_strokes(const bContext *C, ListBase *list);
 
 struct Depsgraph *CTX_data_depsgraph(const bContext *C);
 
+/* Will Return NULL if depsgraph is not allocated yet.
+ * Only used by handful of operators which are run on file load.
+ */
+struct Depsgraph *CTX_data_depsgraph_on_load(const bContext *C);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/blender/blenkernel/intern/context.c b/source/blender/blenkernel/intern/context.c
index 72832e9f897..f420fd974cd 100644
--- a/source/blender/blenkernel/intern/context.c
+++ b/source/blender/blenkernel/intern/context.c
@@ -1244,3 +1244,10 @@ Depsgraph *CTX_data_depsgraph(const bContext *C)
 	ViewLayer *view_layer = CTX_data_view_layer(C);
 	return BKE_scene_get_depsgraph(scene, view_layer, true);
 }
+
+Depsgraph *CTX_data_depsgraph_on_load(const bContext *C)
+{
+	Scene *scene = CTX_data_scene(C);
+	ViewLayer *view_layer = CTX_data_view_layer(C);
+	return BKE_scene_get_depsgraph(scene, view_layer, false);
+}
diff --git a/source/blender/blenkernel/intern/paint.c b/source/blender/blenkernel/intern/paint.c
index 4681f54e26f..4056a15fe47 100644
--- a/source/blender/blenkernel/intern/paint.c
+++ b/source/blender/blenkernel/intern/paint.c
@@ -865,6 +865,15 @@ void BKE_sculpt_update_mesh_elements(
         Depsgraph *depsgraph, Scene *scene, Sculpt *sd, Object *ob,
         bool need_pmap, bool need_mask)
 {
+	if (depsgraph == NULL) {
+		/* Happens on file load.
+		 *
+		 * We do nothing in this case, it will be taken care about on depsgraph
+		 * evaluation.
+		 */
+		return;
+	}
+
 	DerivedMesh *dm;
 	SculptSession *ss = ob->sculpt;
 	Mesh *me = ob->data;
diff --git a/source/blender/editors/sculpt_paint/paint_vertex.c b/source/blender/editors/sculpt_paint/paint_vertex.c
index 1775d4b9c8b..7e9c98d3822 100644
--- a/source/blender/editors/sculpt_paint/paint_vertex.c
+++ b/source/blender/editors/sculpt_paint/paint_vertex.c
@@ -2342,7 +2342,7 @@ static int vpaint_mode_toggle_exec(bContext *C, wmOperator *op)
 		ED_object_vpaintmode_exit_ex(ob);
 	}
 	else {
-		Depsgraph *depsgraph = CTX_data_depsgraph(C);
+		Depsgraph *depsgraph = CTX_data_depsgraph_on_load(C);
 		wmWindowManager *wm = CTX_wm_manager(C);
 		ED_object_vpaintmode_enter_ex(depsgraph, wm, scene, ob);
 	}
diff --git a/source/blender/editors/sculpt_paint/sculpt.c b/source/blender/editors/sculpt_paint/sculpt.c
index 1d1c8460cfd..9817ca41832 100644
--- a/source/blender/editors/sculpt_paint/sculpt.c
+++ b/source/blender/editors/sculpt_paint/sculpt.c
@@ -5793,7 +5793,7 @@ void ED_object_sculptmode_exit(bContext *C)
 
 static int sculpt_mode_toggle_exec(bContext *C, wmOperator *op)
 {
-	Depsgraph *depsgraph = CTX_data_depsgraph(C);
+	Depsgraph *depsgraph = CTX_data_depsgraph_on_load(C);
 	Scene *scene = CTX_data_scene(C);
 	Object *ob = CTX_data_active_object(C);
 	const int mode_flag = OB_MODE_SCULPT;