I Have problem with osmc2 RC3, when customer click last checkout process, appear messages :

Fatal error: Maximum execution time of 30 seconds exceeded in C:\Program Files\Apache Group\Apache2\htdocs\oscm3\includes\classes\email. php on line 522

Fatal error: Maximum execution time of 30 seconds exceeded in C:\Program Files\Apache Group\Apache2\htdocs\oscm3\includes\functions\sess ions.php on line 37

Warning: Unknown: A session is active. You cannot change the session module's ini settings at this time. in Unknown on line 0

A little weird, because store owner received email order from customer, but the customer it's self did'nt receive email order.
it's no over yet, if new user registered, customer receive welcome email.

Do I miss some configuration ??

Pls, help ..