我升级到Wordpress 3.2，我的服务器从php4升级到php5，现在我的站点输出这个错误；
Warning: getimagesize() [function.getimagesize]: URL file-access is disabled in the server configuration in /homepages/35/d289582498/htdocs/wp-content/themes/NovatorixFullArchive_Version1.4/novatorix/index.php on line 98 Warning: getimagesize(http://itsadcoi.com/wp-content/uploads/2011/04/head1.png) [function.getimagesize]: failed to open stream: no suitable wrapper could be found in /homepages/35/d289582498/htdocs/wp-content/themes/NovatorixFullArchive_Version1.4/novatorix/index.php on line 98
这是第98行的错误说明；list($width, $height, $type, $attr) = getimagesize($logo_url);我怎样才能修复它？