This has actually occured since Joomla 1.6 and has carried forward to Joomla 1.7.  In Joomla 1.6 and Joomla 1.7 they have added a token on logout therefore causing problems when registered users are logging out of your website.The error message is: Invalid Token The solution is to add a token to the default.php file… Continue reading Joomla 1.7 Error – Invalid Token on Logout