Hi,
I am having the same problem. Other system emails work but the send to a friend does nothing. When I mouseover the send button it does not seem to have any link or action associated with it.
The site is : http://funzaroo.co.za/index.php . I recently upgraded from 1.6.0.8 from 1.6.0.6. It was not working before the upgrade. Assistance will be much appreciated.