Changed hosting - admin trouble

[Guest]

Hello,

Few days ago, my hosting company said that I have to change nameservers and hosting. So now I'm on a new server, moved all my osCommerce 2.2M2 website, managed to set it up, the Catalog part it's working well, the Admin part it's working except that I get this on top of my page:

 

Warning: session_start() [function.session-start]: open(/var/www/vhosts/<<oldsite>>/httpdocs/tmp/sess_815947797dde544eec65bdf694c2ccdc, O_RDWR) failed: No such file or directory (2) in /home/<<newsite>>/public_html/admin/includes/functions/sessions.php on line 67

 

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/<<newsite>>/public_html/admin/includes/functions/sessions.php:67) in /home/<<newsite>>/public_html/admin/includes/functions/sessions.php on line 67

 

and this on the bottom:

 

Warning: Unknown: Your script possibly relies on a session side-effect which existed until PHP 4.2.3. Please be advised that the session extension does not consider global variables as a source of data, unless register_globals is enabled. You can disable this functionality and this warning by setting session.bug_compat_42 or session.bug_compat_warn to off, respectively. in Unknown on line 0

 

Warning: Unknown: open(/var/www/vhosts/<<oldsite>>/httpdocs/tmp/sess_815947797dde544eec65bdf694c2ccdc, 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 (/var/www/vhosts/<<oldsite>>/httpdocs/tmp) in Unknown on line 0

 

I must say that I modified both config.php files for the new hosting and the Admin is working, only that I get those messages on the page.

What did I do wrong?

Thank you very much.

Best regards

[Guest]

Oh... and another thing...

Anyone can enter in the Admin section.

It does not ask for a password anymore

Please help!!!!!!!