my oscommerce shop won't work,please help

[gibonini12844]

my oscommerce shop won't work,please help...what to do?

link:
http://serbiancarfans.x10.mx/Serbian_Car_Fans/prestashop/



error
Warning: require(includes/languages/.php) [function.require]: failed to open stream: No such file or directory in /home/vladales/public_html/Serbian_Car_Fans/prestashop/includes/application_top.php on line 279

Fatal error: require() [function.require]: Failed opening required 'includes/languages/.php' (include_path='.:/usr/local/php53/pear') in /home/vladales/public_html/Serbian_Car_Fans/prestashop/includes/application_top.php on line 279


I have tried to ad line ina application_top.php as explaned on net...but shop still won't work.
could you help me please?

 

[descalzo]

It is trying to load a file via:

require(includes/languages/.php)

.php is not the name of a file. Looks like a "Language" setting is blank, when it should be "english" or "serbian" , etc.