Hi Dan, thank you for your reply. Upgrading to 3.8.13 does not fix the problem. WordPress is sending out emails correctly as emails are being received when using a test payment gateway but not with DPS PXPay gateway integrated for WP e-Commerce. Admin is also only being sent to one admin.
I have read that there were changes made in a previous version of wpec that sends out the notification emails and it got moved and so the payment gateway may need need modifying to use the new WPSC_Purchase_Log class? Is this a possibility?
Many thanks