clicking on the second point of the gradient outside the mesh should have blended to alpha zero, but was raising an error, fixed.

release/scripts/bpymodules/BPyMesh.py

@@ -355,6 +355,9 @@ def pickMeshRayFace(me, orig, dir):
 def pickMeshGroupWeight(me, act_group, orig, dir):
 	f, side, w0, w1, w2= pickMeshRayFace(me, orig, dir)
 	
+	if f==None:
+		return None
+		
 	f_v= f.v
 	if side==0:
 		f_vi= (f_v[0].index, f_v[1].index, f_v[2].index)
@@ -372,6 +375,9 @@ def pickMeshGroupVCol(me, orig, dir):
 	Vector= Blender.Mathutils.Vector
 	f, side, w0, w1, w2= pickMeshRayFace(me, orig, dir)
 	
+	if f==None:
+		return None
+	
 	def col2vec(c):
 		return Vector(c.r, c.g, c.b)
 	

release/scripts/bpymodules/mesh_gradient.py

@@ -98,7 +98,6 @@ def vertexGradientPick(ob, MODE):
 		pickValB= 0.0
 		TOALPHA= True
 	
-	
 	# set up 2 lines so we can measure their distances and calc the gradient
 	
 	# make a line 90d to the grad in screenspace.