Last night I upgraded JoomSEF from 3.1 to 3.7 by using the built in JoomSEF upgrade tool. It appeared at the time that everything was fine so I went to bed. Today it appears that every page on the site is broken. Every page returns the error message:
Fatal error: Call to undefined method JoomSEF::_varfiltertest() in /home/content/..../administrator/components/com_sef/classes/seftools.php on line 990
I did notice that JoomSEF appears to be working because if I type in a custom URL I see the address bar jump to the correct URL but still the page will not load, giving me the same error message.
If I turn off JoomSEF the site works again (but with the joomla core sef urls).
Database Version: 5.0.91-log
Database Collation: utf8_general_ci
PHP Version: 5.2.8
Web Server: Apache
Web Server to PHP interface: cgi-fcgi
Joomla! Version: Joomla! 1.5.20
Any ideas or help would be greatly appreciated.