[Plugin: WP e-Commerce] session_start() erros showing after install

Amazing Support Huh? I have two errors showing after my 2nd fresh install, isolated problem to the plug in, seems to be a few people with the same issue, even for paid version. Error message follow

Warning: session_start() [function.session-start]: open(/tmp/sess_dd8fa622e46962ced8d8c44f3156de67, O_RDWR) failed: Permission denied (13) in /home/wwwsanda/public_html/wp-content/plugins/wp-e-commerce/wpsc-core/wpsc-constants.php on line 17

Warning: session_start() [function.session-start]: Cannot send session cache limiter – headers already sent (output started at /home/wwwsanda/public_html/wp-content/plugins/wp-e-commerce/wpsc-core/wpsc-constants.php:17) in /home/wwwsanda/public_html/wp-content/plugins/wp-e-commerce/wpsc-core/wpsc-constants.php on line 17

Any help would be greatly appreciated.

http://wordpress.org/extend/plugins/wp-e-commerce/