1 files changed, 2 insertions, 1 deletions
diff --git a/mesh_f2.py b/mesh_f2.py
index 88f503ea..357473d8 100644
--- a/mesh_f2.py
+++ b/mesh_f2.py
@@ -186,7 +186,8 @@ def quad_from_edge(bm, edge_sel, context, event):
                             uv_ori[loop.vert.index] = loop[uv_layer].uv
                 if len(uv_ori) == 4 or len(uv_ori) == 3:
                     for loop in face.loops:
-                        loop[uv_layer].uv = uv_ori[loop.vert.index]
+                        if loop.vert.index in uv_ori:
+                            loop[uv_layer].uv = uv_ori[loop.vert.index]
 
     # toggle mode, to force correct drawing
     bpy.ops.object.mode_set(mode='OBJECT')