我在虚拟主机中使用SESSION时，已经将session_start();写在第一行，前面并没空格。将报错：

Warning: session_start() [function.session-start]: open(/mnt/145/sdb/d/b/www.******.fr/sessions/sess_10ca6876baf1f5dea852af8fcbb1e47f, O_RDWR) failed: No such file or directory (2) in /mnt/145/sdb/d/b/www.innovtech.fr/test1.php on line 3

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /mnt/145/sdb/d/b/www.*******.fr/test1.php:3) in /mnt/145/sdb/d/b/www.innovtech.fr/test1.php on line 3

Warning: Unknown(): open(/mnt/145/sdb/d/b/www.*******.fr/sessions/sess_10ca6876baf1f5dea852af8fcbb1e47f, O_RDWR) failed: No such file or directory (2) in Unknown on line 0

Warning: Unknown(): Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/mnt/145/sdb/d/b/www.*******.fr/sessions) in Unknown on line 0

应该如何才能解决？谢谢！