You will get the following error only if allow_url_fopen is disabled on the server.

Warning: include() [function.include]: URL file-access is disabled in the server configuration in /home/username/public_html/search.php on line 250
allow_url_fopen is enabled on your server. Please make sure that you don't have php.ini file inside of your folders with allow_url_fopen disabled.

Code:
allow_url_fopen = Off
If you still face this problem, please open a trouble ticket and we will have a look into this issue.