Подскажите что делать ..люди добрые

* warning: tempnam() [function.tempnam]: open_basedir restriction in effect. File() is not within the allowed path(s): (/home/:/tmp:/var/www/html:/usr/local/lib/php/) in ...../public_html/includes/file.inc on line 756.
* warning: fopen() [function.fopen]: Filename cannot be empty in ...../public_html/includes/file.inc on line 757.
* Невозможно создать файл.
* warning: tempnam() [function.tempnam]: open_basedir restriction in effect. File() is not within the allowed path(s): (/home/:/tmp:/var/www/html:/usr/local/lib/php/) in ...../public_html/includes/file.inc on line 756.
* warning: fopen() [function.fopen]: Filename cannot be empty in ...../public_html/includes/file.inc on line 757.
* Невозможно создать файл.

Спасибо !