From b8eadd6d61f98fa890018749475143525120836e Mon Sep 17 00:00:00 2001
From: Erik Ziegler <erik.sweed@gmail.com>
Date: Thu, 9 Aug 2018 15:50:36 +0200
Subject: [PATCH] fix(studyPrefetcher): Avoid errors in Study Prefetcher when
 settings are undefined

---
 .../client/lib/classes/StudyPrefetcher.js           | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/Packages/ohif-viewerbase/client/lib/classes/StudyPrefetcher.js b/Packages/ohif-viewerbase/client/lib/classes/StudyPrefetcher.js
index 5b3a28ce8..98184b50b 100644
--- a/Packages/ohif-viewerbase/client/lib/classes/StudyPrefetcher.js
+++ b/Packages/ohif-viewerbase/client/lib/classes/StudyPrefetcher.js
@@ -131,7 +131,18 @@ export class StudyPrefetcher {
     }
 
     prefetchDisplaySets() {
-        const config = Meteor.settings.public.prefetch;
+        let config;
+        if (Meteor.settings &&
+            Meteor.settings.public &&
+            Meteor.settings.prefetch) {
+            config = Meteor.settings.public.prefetch;
+        } else {
+            config = {
+                order: 'closest',
+                displaySetCount: 1
+            };
+        }
+
         const displaySetsToPrefetch = this.getDisplaySetsToPrefetch(config);
         const imageIds = this.getImageIdsFromDisplaySets(displaySetsToPrefetch);