Don't insert things into .navLinksBot if it didn't load.

src/Monitoring/ThreadUpdater.coffee

@@ -27,7 +27,7 @@ ThreadUpdater =
       className: 'brackets-wrap updatelink'
     $.extend updateLink, <%= html('<a href="javascript:;">Update</a>') %>
     Main.ready ->
-      $.add $('.navLinksBot'), [$.tn(' '), updateLink]
+      $.add navLinksBot, [$.tn(' '), updateLink] if (navLinksBot = $ '.navLinksBot')
     $.on updateLink.firstElementChild, 'click', @update
 
     subEntries = []

src/Posting/QR.coffee

@@ -80,7 +80,7 @@ QR =
         QR.open()
         QR.nodes.com.focus()
 
-      $.prepend $('.navLinksBot'), linkBot
+      $.prepend navLinksBot, linkBot if (navLinksBot = $ '.navLinksBot')
 
     origToggle = $.id 'togglePostFormLink'
     $.before origToggle, link

src/Quotelinks/QuoteThreading.coffee

@@ -39,7 +39,7 @@ QuoteThreading =
   setThread: ->
     QuoteThreading.thread = @
     $.asap (-> !Conf['Thread Updater'] or $ '.navLinksBot > .updatelink'), ->
-      $.add $('.navLinksBot'), [$.tn(' '), QuoteThreading.threadNewLink]
+      $.add navLinksBot, [$.tn(' '), QuoteThreading.threadNewLink] if (navLinksBot = $ '.navLinksBot')
 
   node: ->
     return if @isFetchedQuote or @isClone or !@isReply