Proble in Eplorer browser

[elatora]

HI i installed and all workd ok but my client tris to open and get the follwing error:

 

Warning: main(includes/languages/.php) [function.main]: failed to open stream: No such file or directory in /home/c23/public_html/catalog/includes/application_top.php on line 285

 

Warning: main(includes/languages/.php) [function.main]: failed to open stream: No such file or directory in /home/c23/public_html/catalog/includes/application_top.php on line 285

 

Fatal error: main() [function.require]: Failed opening required 'includes/languages/.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/c23/public_html/catalog/includes/application_top.php on line 285

 

is this an explorer problem; mystery to me. we both have same versions i think

thnaks for rapid esponse if possible