can't log into admin

I installed a new plugin yesterday, and everything seemed OK, and then I updated another plugin, and then I couldn’t get into the admin area of my wordpress site. I keep getting this message when I try to get into the admin area. Can you let me know what I can do. here is the message I get:

Parse error: syntax error, unexpected T_PAAMAYIM_NEKUDOTAYIM in /home/bbbusine/public_html/blog/wp-content/plugins/facebook/admin/settings.php on line 236