I just tested the VM integration and it looks nice,
I have a master site
and a slave site
Different dirs, different URLS, different database, but share VM db

When I press ADD TO CARD the script redirect me to the master

Any suggestions?

You have to update the VM Configuration to change the "security" parameter and the URL used by the slave site.
You have 2 URLs, one for site URL and second for seured URL.

By default when you have never save the VM configuration, JMS read the default one (master) and therefore retreive the master URL.

Ok, thanks...
But when I login to the slave site than virtuemart breaks because the files are linked to the master and the DB is also linked to the master.
Where and how can I update the slave configuration?

All VM tables were linked to the master db at time of slave creation

p.s. Thank you for this wonderful component and your superb help

NO, unfortunatelly, VM does not save the configuration into the DB and therefore is NOT shared.
This is the reason why I told you to go in the VM back-end and in its configuration.

You have to change the security tabs in the VM configuration.
The URL to acccess the VM back-end configuration is like
index.php?pshop_mode=admin&page=admin.show_cfg&option=com_virtuemart

So go in VM and select their menu configuration.

There is something very wierd going on with my slave installation

The backend of the slave works fine. no problem there
However when I open VM in the backend teh links to the products, admin etc is
.com/administrator/ .....

Yet when I open this in the master the links show
.com/www/administrator/...

Any idea why this subdirectory www is removed in the VM backend of the slave?
Other menu items (outside VM) point nicely to the www

I am lost now...

For the 4th time.
EDIT THE VM CONFIGURATION AND GIVE THE CORRECT LINK.

THE URL IS IN THE VM CONFIGURATION.