big mistakes with update

[mmichael29]

Hi,

i did a big mistake last night, we have plesk 7.5 and i did an update with the class.Session.php, and overwrote it without having a copy. Now plesk isn't working anymore. Is there a possibility to get this class.Session.php in the right version without totally reinstalling the server? It's a rootserver at 1und1?

Best regards

Michael Weber