I uploaded the new file and now get these errors:
Warning: Missing argument 12 for WA_eCartDefinition::WA_eCartDefinition(), called in /homepages/20/d184490718/htdocs/PyxelsDesignStudio/WA_eCart/WA_Store_Cart_PHP.php on line 5 and defined in /homepages/20/d184490718/htdocs/PyxelsDesignStudio/WA_eCart/WA_eCart_Definition_PHP.php on line 42
Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /homepages/20/d184490718/htdocs/PyxelsDesignStudio/WA_eCart/WA_eCart_Definition_PHP.php:42) in /homepages/20/d184490718/htdocs/PyxelsDesignStudio/WA_eCart/WA_eCart_Definition_PHP.php on line 465
Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /homepages/20/d184490718/htdocs/PyxelsDesignStudio/WA_eCart/WA_eCart_Definition_PHP.php:42) in /homepages/20/d184490718/htdocs/PyxelsDesignStudio/WA_eCart/WA_eCart_Definition_PHP.php on line 465