Hi,
Thank you for your response. I did download Joomla 3.4.8 and installed it on the template via the backend as you said, but I still get the above message when I try to update the extensions. There is a bug somewhere on this template. I installed the Papa template before on the same server and I didn't get this error message. You may need to test this yourself to see what the problem is as I think I may use this template now as I like it compared to the Papa template. Also, the Saphi template does not show the quick view function after the update of Joomla and Virtuemart. Too many bugs I think.