Comment 245 for bug 52667

(From update of attachment 376569)
>+function UpdateReplyButtons(aUrl)
>+{
>+ let msgHdr = msgHdrForCurrentMessage();
>+ let showReplyAll = true

Please add trailing ';' - those are missing in quite a few places.

>+ replyAllButton.hidden = (buttonToShow != "replyAll");
>+
>+ debugger;

Remove the debugger

I had the updating issue with only this patch applied too, fwiw.