Methid "render" does not exist

[ArthurLaheyne]

I've just finished the installation and got this error when i try to go to the blog index :

Method "render" for object "Knp\Bundle\PaginatorBundle\Pagination\SlidingPagination" does not exist in C:\wamp\www\Symfony2.1.7\vendor\stfalcon\blog-bundle\Stfalcon\Bundle\BlogBundle/Resources/views/Post/index.html.twig at line 7 500 Internal Server Error - Twig_Error_Runtime

I'm new to symfony, can't debug myself :/

[jbruni]

https://github.com/KnpLabs/KnpPaginatorBundle/blob/master/Resources/doc/upgrade.md