Hi,
JoomSEF package on our site is now fixed.
If you downgraded back to 1.5.1, new Upgrade should be enough.
If you still have not working 2.0.0 version on your site, download our com_joomsef_2.0.0.zip again, extract it and replace following files on your server with the new ones:
/components/com_sef/joomsef.php
/components/com_sef/sef.cache.php
/components/com_sef/sef_ext.php
/components/com_sef/sef_ext/com_glossary.php
After replacing these four files JoomSEF should be working again.
Best regards,
David Jozefov