Plugin error?!

While updating one of my plugin’s in wordpress, I received this error:

Fatal error: Can’t use function return value in write context in /home/stephani/public_html/wp-content/plugins/eshop/eshop-upgrade.php on line 176

And now, when you try to access the site: http://www.StephanieLange.com, all you see is that same error message. Could someone please tell me how to go about fixing this? :S