Duplicate orders and emails

[arcojml]

Hi,

I recently installed my website again, and since that I have everything double (orders, emails,...) for every order. Ordernumber is the same for both.
Is this some setting that is not correct? Using Joomla 2.5.27 / Virtuemart 2.6.12.
Customer also receives everything twice, so very confusing...


Regards,
Peter.