wp online store plugin

I thought i added a language code but instead some error code appeared, is there a fix for this?
Warning: require(languages/.php) [function.require]: failed to open stream: No such file or directory in /home/content/74/6224074/html/oneezworld.com/wp-content/plugins/wp-online-store/admin/includes/application_top.php on line 187

Fatal error: require() [function.require]: Failed opening required ‘languages/.php’ (include_path=’.:/usr/local/php5/lib/php’) in /home/content/74/6224074/html/oneezworld.com/wp-content/plugins/wp-online-store/admin/includes/application_top.php on line 187