warning: fopen() [function.fopen]: SAFE MODE Restriction in effect. The script whose uid is 10009 is not allowed to access /var/www/vhosts/gtthm.com/httpdocs/files owned by uid 48 in /var/www/vhosts/gtthm.com/httpdocs/includes/file.inc on line 117. .

warning: fopen(files/.htaccess) [function.fopen]: failed to open stream: Success in /var/www/vhosts/gtthm.com/httpdocs/includes/file.inc on line 117.

のようなエラーがでた。このエラーは　/wp-content/uploads/2010/04
のownerの変更とmod777にすることで解決した。