You have chosen to sponsor your bid up to a maximum amount of .
I have my modacalcio.com in virtuemart 1
When I go saving some product in backend, joomla system reports an error, that it's not defined
I can provide you a copy of the website with akeeba backup so you can install on your webserver and detect the error
Winner also have to create a tutorial with file edit with their path and modification done, in order to re do if any time should happen again