Thread:Project:Support desk/New users can't login

Error message when new users try to login: "Login error Incorrect or missing confirmation code." I have been using Confirmedit/Asirra for months with no problem but recently updated the database using the Web updater after installing Liquid Threads. I had also updated Semantic Bundle to the latest version at this same time. Since I wasn't made aware of the problem creating new accounts until after the above changes, I don't know which may be the culprit. I"ve tried upgrading Confirmedit/Asirra to latest version but that doesn't fix. Any guidance will be much appreciated.

MediaWiki 1.18.0, PHP 5.2.17 (cgi-fcgi), MySQL 5.0.92-log, Semantic Bundle (Version 20120308)