Error when users finish purchase

[info@gamewark.com]

Hello!!

I've installed Virtuemart3 under Joomla 3.5 and it seems that all is working well (more or less).
But, when users tries to finish the purchase it appears this error:

[...]
Error: 1 - Could not access file:

You may not be able to visit this page because of:

    an out-of-date bookmark/favourite
    a search engine that has an out-of-date listing for this site
    a mistyped address
    you have no access to this page
    The requested resource was not found.
    An error has occurred while processing your request.
[...]

What I'm doing wrong?

[GJC Web Design]

What are your actual accurate Joomla and VM versions?

If J3.5.1 then use VM3.0.16