Blank site - Easy social

Hello i just sent you an email but i don't know if you received, so i try open a ticket.
In the settings of easysocial of my site, there is a section named "search indexer", after selecting all items i push "Index items button", from that moment my site is not available.
For your help i open new admin user:
user xxx
password xxx

http://www.sharinglook.com/administrator

Please could you kindly check what's happend?
Now site is blank and homepage doesn' appear, it's very strange.
Thank you in advance for your support
Salvatore