nach neuinstallation fehler

[level]

Hallo Leute,
ich hab xt commerce neu installiert und bekomm jetzt diese Meldung wenn ich auf die Startseite geh:

Warning: session_save_path(): SAFE MODE Restriction in effect. The script whose uid is 1033 is not allowed to access owned by uid 0 in /home/.sites/81/site18/web/includes/application_top.php on line 219

Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /home/.sites/81/site18/web/includes/application_top.php:219) in /home/.sites/81/site18/web/includes/application_top.php on line 270

Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /home/.sites/81/site18/web/includes/application_top.php:219) in /home/.sites/81/site18/web/includes/application_top.php on line 270


Hat ich noch nie bei meinem Hoster. wer kennt das und kann mir helfen??