Translations:Help:DiscussionTools/Why can't I reply to this comment?/45/en

You can often debug this by opening the page for editing in visual editor (even if visual editor is disabled in that namespace, you can do it by adding $1 to the URL), clicking in the offending fragment of the page, and looking at the "sidebar" in the template dialog to see if it includes more than one page or "Content" transclusions.