Hi globalmedia, please see our Documentation for large data exports as your exports are exhausting all allocated memory within WordPress resulting in a 500 Internal Server Error (blank page). You can see the amount of memory being used by our Plugin by making a smaller export and opening Media > CSV file > Export Details within the WP Admin. I’ll be explaining CRON job support in the coming days.
http://www.visser.com.au/documentation/store-exporter-deluxe/usage/
