Aw: Re: intranet installation of TikiWiki Posted by wincel 04 Mar 2010 21:10 UTC It is a Tiki 4 bug: http://tikiwiki.org/tiki-searchresults.php?highlight=Notice%3A+this+variable+may+not+be+empty%3A+%24_POST%22thread_sort_mode%22&search=Los