From ea1a228d5b423ecfa18e0af962ac19d4e29577f7 Mon Sep 17 00:00:00 2001
From: Stewart Allen <stewart.allen@gmail.com>
Date: Mon, 26 Apr 2021 21:01:20 -0400
Subject: [PATCH] catch a rare widget with missing slices (cause unknown)

---
 src/mode/fdm/slice.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mode/fdm/slice.js b/src/mode/fdm/slice.js
index 59ffd2df..4e73883f 100644
--- a/src/mode/fdm/slice.js
+++ b/src/mode/fdm/slice.js
@@ -200,7 +200,7 @@
                     tops = slice.topPolys();
                     for (let peer of widget.group) {
                         // skip self
-                        if (peer === widget) {
+                        if (peer === widget || !peer.slices) {
                             continue;
                         }
                         for (let pslice of peer.slices) {