From ab13e716ad84d0d4794b8d492471513b9b3e13a8 Mon Sep 17 00:00:00 2001
From: Samuel Elliott <samuel@fancy.org.uk>
Date: Sat, 7 Jul 2018 14:37:04 +0100
Subject: [PATCH] Fix custom CSS editor

---
 core/src/main.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/core/src/main.js b/core/src/main.js
index 804e7631..0cfe3c23 100644
--- a/core/src/main.js
+++ b/core/src/main.js
@@ -66,8 +66,11 @@ class PatchedBrowserWindow extends BrowserWindow {
 
         super(options);
 
-        this.__bd_preload = [originalOptions.webPreferences.preload];
+        this.__bd_preload = [];
 
+        if (originalOptions.webPreferences && originalOptions.webPreferences.preload) {
+            this.__bd_preload.push(originalOptions.webPreferences.preload);
+        }
         if (userOptions.webPreferences && userOptions.webPreferences.preload) {
             this.__bd_preload.push(path.resolve(_dataPath, userOptions.webPreferences.preload));
         }