From b2552795dc0233d21bd5075d611ec85af14fc144 Mon Sep 17 00:00:00 2001
From: Shawn Bruce <kantlivelong@gmail.com>
Date: Thu, 26 Oct 2017 13:12:38 -0400
Subject: [PATCH] Set tools actual/target to 0 if they dont exist.

---
 src/octoprint/static/js/app/viewmodels/temperature.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/octoprint/static/js/app/viewmodels/temperature.js b/src/octoprint/static/js/app/viewmodels/temperature.js
index 55c8cc50..719825db 100644
--- a/src/octoprint/static/js/app/viewmodels/temperature.js
+++ b/src/octoprint/static/js/app/viewmodels/temperature.js
@@ -210,6 +210,9 @@ $(function() {
                 if (lastData.hasOwnProperty("tool" + i)) {
                     tools[i]["actual"](lastData["tool" + i].actual);
                     tools[i]["target"](lastData["tool" + i].target);
+                } else {
+                    tools[i]["actual"](0);
+                    tools[i]["target"](0);
                 }
             }