I've successfully installed ezpublish-5.0.0-ee-bul.tar.gz but I experience the following error when visiting a node (as anonymous) behind a restricted section:

TwigBundle:Exception:error500.html.twig

And this is the exception being thrown in PHPs error_log (seems to be in order):

[10-Jan-2013 14:40:33 UTC] Uncaught PHP Exception eZ\Publish\Core\Base\Exceptions\UnauthorizedException: "User does not have access to 'read' 'content'" at /mnt/data/fredrik/www/ezp5/vendor/ezsystems/ezpublish/eZ/Publish/Core/Repository/LocationService.php line 200

It should display the login template as it does in previous versions.

Please let me know if you need any more details on this issue.

Best regards,
Fredrik