From 6a1706f5b693e1ef499814593e4ed96301acbb67 Mon Sep 17 00:00:00 2001
From: ccd0 <admin@containerchan.org>
Date: Sat, 24 May 2014 01:15:21 -0700
Subject: [PATCH] check that jsMath and jsMath.Autoload exist

---
 src/Miscellaneous/Fourchan.coffee | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Miscellaneous/Fourchan.coffee b/src/Miscellaneous/Fourchan.coffee
index f0309359b..7d36e8b93 100755
--- a/src/Miscellaneous/Fourchan.coffee
+++ b/src/Miscellaneous/Fourchan.coffee
@@ -18,10 +18,11 @@ Fourchan =
       # https://github.com/MayhemYDG/4chan-x/issues/645#issuecomment-13704562
       $.globalEval '''
         window.addEventListener('jsmath', function(e) {
+          if (!jsMath) return;
           if (jsMath.loaded) {
             // process one post
             jsMath.ProcessBeforeShowing(e.detail);
-          } else if (jsMath.Autoload.checked) {
+          } else if (jsMath.Autoload && jsMath.Autoload.checked) {
             // load jsMath and process whole document
             jsMath.Autoload.Script.Push('ProcessBeforeShowing', [null]);
             jsMath.Autoload.LoadJsMath();