From 494a85a34c579a76ada9e3b89ece82143df9607e Mon Sep 17 00:00:00 2001
From: Russell Johnson <47639332+Russ4262@users.noreply.github.com>
Date: Mon, 4 May 2020 00:28:40 -0500
Subject: [PATCH] Path: Fix `extrude()` fails with zero vector

Add error message and return empty path for ProfileEdges open-edge case.
---
 src/Mod/Path/PathScripts/PathProfileEdges.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/Mod/Path/PathScripts/PathProfileEdges.py b/src/Mod/Path/PathScripts/PathProfileEdges.py
index 26ee36d541..b266b53ea4 100644
--- a/src/Mod/Path/PathScripts/PathProfileEdges.py
+++ b/src/Mod/Path/PathScripts/PathProfileEdges.py
@@ -197,6 +197,11 @@ class ObjectProfile(PathProfileBase.ObjectProfile):
         sdv = wBB.ZMax
         fdv = obj.FinalDepth.Value
         extLenFwd = sdv - fdv
+        if extLenFwd <= 0.0:
+            msg = translate('PathProfile',
+                            'For open edges, select top edge and set Final Depth manually.')
+            FreeCAD.Console.PrintError(msg + '\n')
+            return False
         WIRE = flatWire.Wires[0]
         numEdges = len(WIRE.Edges)