PDF problem

[TheHostDogs]

Hi,

After the update of virtuemart to 2.0.6 I noticed that there is a problem on the pdf creation.
When I go to see the order in pdf from the backend it shows the following
http://www.trazeras.gr/eshop/index.php?option=com_virtuemart&view=invoice&layout=invoice&format=pdf&tmpl=component&virtuemart_order_id=26&order_number=378a028&order_pass=p_0b007

Can anyone help me?

[TheHostDogs]

Additionally the same happens when I try to change the status of an order to confirmed