msdlawaz on "(Plugin) QTranslate Not Working"

I am the webmaster for the site MSDLawAZ.com. Recently, I updated a plugin of my site QTranslate and now content on my Blogs page won't load anymore. Here's the link to the page http://msdlawaz.com/?page_id=16

I now see the following error: Catchable fatal error: Object of class WP_Post could not be converted to string in /home/content/82/9493782/html/wp-content/plugins/qtranslate/qtranslate_core.php on line 455

Unfortunately, I cannot locate a earlier backup from which to restore the core.php file. I have the contents of the existing core.php file though if it helps. I have examined the line in question causing problems and here's what it shows: return $before.strftime($format, $date).$after;

Any ideas on how to resolve this? I can if needed post the entire core.php file contents in a follow-up post.