diff --git a/geo_nodes.py b/geo_nodes.py
index 9257fba..93c4cc3 100644
--- a/geo_nodes.py
+++ b/geo_nodes.py
@@ -263,7 +263,7 @@ def process_geo_nodes_group(node_tree, level, node_vars, used_vars):
                     curve_node_settings(node, file, inner, node_var)
                 elif node.bl_idname in image_nodes:
                     img = node.image
-                    if img.source in {'FILE', 'GENERATED', 'TILED'}:
+                    if img is not None and img.source in {'FILE', 'GENERATED', 'TILED'}:
                         save_image(img, addon_dir)
                         load_image(img, file, inner, f"{node_var}.image")
                 elif node.bl_idname == 'GeometryNodeSimulationInput':
diff --git a/materials.py b/materials.py
index 3946ed4..7b6b803 100644
--- a/materials.py
+++ b/materials.py
@@ -189,7 +189,7 @@ def process_mat_node_group(node_tree, level, node_vars, used_vars):
 
                 elif node.bl_idname in image_nodes:
                     img = node.image
-                    if img.source in {'FILE', 'GENERATED', 'TILED'}:
+                    if img is not None and img.source in {'FILE', 'GENERATED', 'TILED'}:
                         save_image(img, addon_dir)
                         load_image(img, file, inner, f"{node_var}.image")
                         image_user_settings(node, file, inner, node_var)