* Was the only change you made the installation of JFBConnect v4.3?
Yes it was
* When did you upgrade K2?
It was a completely fresh build of my site. Installation and configuration went like this: fresh install of Joomla 2.5.7 > upgrade to 2.5.8 > install k2 2.6.2 > install jomsocial 2.8 > install xmap, offlajn improved login and > install JFBConnect 4.3. Everything was tested and working fine until JFBConnect. Then the error, which disappears as soon as you disable your extension via phpmyadmin.
* If re-order the K2 System and JFBCSystem plugins so they are in different postions (first, last, before, after each other), does the issue remain?
I just tried reenabling your JFBCSystem extension after reordering plugins to put yours first and last, and K2 first and last (4 tests). No joy. I left your plugin enabled. You can see the test site is down at
profr.me with the error: Fatal error: Cannot make static method JModel::addIncludePath() non static in class K2Model in /home/larpo/profr.me/administrator/components/com_k2/models/model.php on line 0
* Does this only happen on K2 pages, or on any pages of your site?
All pages of the site, front and back.
* Admin or Front-end only?
Front and back