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an out-of-date bookmark/favourite
a search engine that has an out-of-date listing for this site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?
What are your actual accurate Joomla and VM versions?
If J3.5.1 then use VM3.0.16