The session id contains invalid characters

[schani]

Hello, sins these days i have a error at the default.php pages of my osc shop (www.midigital.de).

Warning: session_start(): The session id contains invalid characters, valid characters are only a-z, A-Z and 0-9 in /home/httpd/vhosts/midigital.de/httpdocs/includes/functions/sessions.php on line 67

This line starts the session (tep_start_session()). I have also other Projects on this Maschine (typo3,forums) whitout a php session Problem. Is it possible that there is a osc cash problem ore session path problem ?

 

Thanks for help

 

Christian