change to Nathan's fix which also works with empty material slots.

1 files changed, 6 insertions, 9 deletions

diff --git a/release/scripts/op/uv.py b/release/scripts/op/uv.py
index 5ab1507a6a6..17520ff6d77 100644
--- a/release/scripts/op/uv.py
+++ b/release/scripts/op/uv.py
@@ -113,7 +113,7 @@ def write_png(fw, mesh_source, image_width, image_height, face_iter):
     filepath = fw.__self__.name
     fw.__self__.close()
 
-    material_solids = [bpy.data.materials.new("uv_temp_solid") for i in range(len(mesh_source.materials))]
+    material_solids = [bpy.data.materials.new("uv_temp_solid") for i in range(max(1, len(mesh_source.materials)))]
     material_wire = bpy.data.materials.new("uv_temp_wire")
 
     scene = bpy.data.scenes.new("uv_temp")
@@ -166,13 +166,8 @@ def write_png(fw, mesh_source, image_width, image_height, face_iter):
     # place behind the wire
     obj_solid.location = 0, 0, -1
     
-    try:
-        obj_wire.material_slots[0].link = 'OBJECT'
-        obj_wire.material_slots[0].material = material_wire
-    except: # orig object didn't have material, add one here
-        obj_wire.data.materials.append(material_wire)
-        obj_wire.material_slots[0].link = 'OBJECT'
-        obj_wire.material_slots[0].material = material_wire
+    obj_wire.material_slots[0].link = 'OBJECT'
+    obj_wire.material_slots[0].material = material_wire
     
     
     # setup the camera
@@ -186,7 +181,9 @@ def write_png(fw, mesh_source, image_width, image_height, face_iter):
 
     # setup materials
     for i, mat_solid in enumerate(material_solids):
-        mat_solid.diffuse_color = mesh_source.materials[i].diffuse_color
+        if mesh_source.materials and mesh_source.materials[i]:
+            mat_solid.diffuse_color = mesh_source.materials[i].diffuse_color
+
         mat_solid.use_shadeless = True
         mat_solid.use_transparency = True
         mat_solid.alpha = 0.25