Gallery2 won't work and apache gives a 500 error code

[Kike Escorihuela]

After installing and configuring gallery2, trying to access with a browser to domain.com/gallery2 result in this access.log entry:

195.235.XX.XX - - [27/Aug/2013:08:47:07 +0200] "GET /gallery2/main.php HTTP/1.1" 500 265 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.57 Safari/537.36"

and this errorr.log entry:

Tue Aug 27 08:47:41 2013] [error] [client 195.235.XX.XX] PHP Warning: require_once(/usr/share/gallery2/modules/core/classes/../../../lib/smarty/Smarty.class.php): failed to open stream: No such file or directory in /usr/share/gallery2/modules/core/classes/GalleryCoreApi.class on line 2827
[Tue Aug 27 08:47:41 2013] [error] [client 195.235.XX.XX] PHP Fatal error: require_once(): Failed opening required '/usr/share/gallery2/modules/core/classes/../../../lib/smarty/Smarty.class.php' (include_path='.:/usr/share/php:/usr/share/pear') in /usr/share/gallery2/modules/core/classes/GalleryCoreApi.class on line 2827

I try to verify if /usr/sahre/gallery2/lib/smarty/Smary.class.php exist but seems that smarty was a broken link in /usr/share/gallery2. So, trying to locate the file I found that is in another directory (/usr/share/php/smarty3). After correcting the link the error.log says:

[Tue Aug 27 08:51:55 2013] [error] [client 195.235.XX.XX] PHP Notice: Indirect modification of overloaded property GallerySmarty::$plugins_dir has no effect in /usr/share/gallery2/modules/core/classes/GalleryTemplate.class on line 335
[Tue Aug 27 08:51:55 2013] [error] [client 195.235.XX.XX] PHP Fatal error: Uncaught exception 'SmartyException' with message 'Call of unknown method 'register_object'.' in /usr/share/php/smarty3/sysplugins/smarty_internal_templatebase.php:806\nStack trace:\n#0 /usr/share/gallery2/modules/core/classes/GalleryTemplate.class(346): Smarty_Internal_TemplateBase->__call('register_object', Array)\n#1 /usr/share/gallery2/modules/core/classes/GalleryTemplate.class(346): GallerySmarty->register_object('g', Object(GalleryTemplateAdapter), Array, true, Array)\n#2 /usr/share/gallery2/modules/core/classes/GalleryTemplate.class(71): GalleryTemplate->_getSmarty(true)\n#3 /usr/share/gallery2/main.php(463): GalleryTemplate->GalleryTemplate('/usr/share/gall...')\n#4 /usr/share/gallery2/main.php(104): _GalleryMain(false)\n#5 /usr/share/gallery2/main.php(88): GalleryMain()\n#6 {main}\n thrown in /usr/share/php/smarty3/sysplugins/smarty_internal_templatebase.php on line 806

And gallery2 installation still won't work.

About the versions:
$ dpkg -l "*gallery2*" "*php5*" "*apache2*" "*smarty*" | grep ^ii
ii apache2 2.2.22-6ubuntu5.1 amd64 Apache HTTP Server metapackage
ii apache2-mpm-prefork 2.2.22-6ubuntu5.1 amd64 Apache HTTP Server - traditional non-threaded model
ii apache2-utils 2.2.22-6ubuntu5.1 amd64 utility programs for webservers
ii apache2.2-bin 2.2.22-6ubuntu5.1 amd64 Apache HTTP Server common binary files
ii apache2.2-common 2.2.22-6ubuntu5.1 amd64 Apache HTTP Server common files
ii gallery2 2.3-1ubuntu6 all web-based photo album written in PHP
ii libapache2-mod-php5 5.4.9-4ubuntu2.2 amd64 server-side, HTML-embedded scripting language (Apache 2 module)
ii libapache2-modsecurity 2.6.6-6 amd64 Tighten web applications security for Apache
ii php5 5.4.9-4ubuntu2.2 all server-side, HTML-embedded scripting language (metapackage)
ii php5-cgi 5.4.9-4ubuntu2.2 amd64 server-side, HTML-embedded scripting language (CGI binary)
ii php5-cli 5.4.9-4ubuntu2.2 amd64 command-line interpreter for the php5 scripting language
ii php5-common 5.4.9-4ubuntu2.2 amd64 Common files for packages built from the php5 source
ii php5-curl 5.4.9-4ubuntu2.2 amd64 CURL module for php5
ii php5-gd 5.4.9-4ubuntu2.2 amd64 GD module for php5
ii php5-intl 5.4.9-4ubuntu2.2 amd64 internationalisation module for php5
ii php5-mcrypt 5.4.6-0ubuntu1 amd64 MCrypt module for php5
ii php5-mysql 5.4.9-4ubuntu2.2 amd64 MySQL module for php5
ii smarty3 3.1.10-2 all Template engine for PHP

$ lsb_release -rd
Description: Ubuntu 13.04
Release: 13.04