SOLVED- The issue with the WWW missing is now solved

However:
I now have set the site and security url to point to the slave.
When I press add to cart it still jumps to the master site

I don't see how it can jump to another domain except if you have not defined the name correctly in JMS.

Check that the link used by the VM Add button is correctly produced.
(It should use the URL that you have specifed in the VM configuration).

If it is correct as I expect, you have later to check that you domain is correctly spelled in JMS and that you have for example defined the domain with both WWW and without the WWW.

When a domain is not defined in JMS, it automatically display the default one (the master).

Thanks...
I am getting closer

The slave config file contains
define( 'URL', 'www.metamedicine.com/www/' );
define( 'SECUREURL', 'www.metamedicine.com/www/' );

yet in the slave admin it mentions:
/administrator/components/com_virtuemart/virtuemart.cfg.php :: Writeable (=master)

yet the images and the add button still point to the master


in master jms setting:
deploy: /var/www/metamedicine_com/www/
domainnames www.metamedicine.com (tried also www.metamedicine.com/www/)

When I edit the VM main config into

echo "---:".MULTISITES_ID;
if ( defined( 'MULTISITES_ID') && file_exists( dirname(__FILE__) .DS. 'virtuemart.' .MULTISITES_ID. '.cfg.php')) {

and then the slave shows
----: MULTISITES_ID
Indicating that MULTISITES_ID is not defined

Any suggestions?

Sorry, but I don't see.
If you have correctly installed the JMS patches and the URL are correctly defined then I don't see the origin.

Normally VM use the field URL or SECUREUL to compute the link.
So the link should be OK except if you don't have installed the JMS patches.

If you want that we investigate on your server, this is possible with our billable support that you can order on
www.jms2win.com/download?page=shop.produ...35&category_id=1

In response to
echo "---:".MULTISITES_ID; in my basic VM config I get the following results

In the backend of my slave it shows the correct ID
---:metamedicine_commmcfg

In the frontend of my slave
---:MULTISITES_ID

I have installed the latest version and incl all patches are OK
Joomla Multi Sites version: 1.2.10 (Latest available: 1.2.10)
Patches definition version: 1.2.13 (Latest available: 1.2.13)

It looks like the VM patch does not load the MULTISITES_ID in the frontend
(but it does it correctly on the backend)

Where is this code that handles the setting of this define in the frontend ?

JMS Master config looks ok
Site ID (*): metamedicine_com
Domain names: www.metamedicine.com
deploy : /var/www/metamedicine_com/www/

Please advise...