Facebook FBML Help

I have an application on facebook which has been running smoothly for the past 12 months, however today, it has stopped working due to and offset error as seen below: **Fatal error**: Cannot use string offset as an array in **/home/username/public_html/application/[login to view URL]** on line **23 ** I have checked the code and have found it to be in the following: // Get user details from facebook $get_name="SELECT name, pic_square FROM user WHERE uid = '".$user_id."'"; $get_name_result=$facebook->api_client->fql_query($get_name); $user_name=$get_name_result[0]['name']; $profile_pic=$get_name_result[0]['pic_square']; The error is in this line: $user_name=$get_name_result[0]['name']; If i remove the "[0]" the page loads but the data requested isnt sent which is causing the application to break. I need you to tell me how to fix this issue so the user data requested is displayed when called from my application. This is an urgent job, and i will be selecting a bidder in the next hour.