Just installed mystore dark, have a problem

Hi

I've just installed the mystore dark theme using the quickstart files and the theme files for jcomments and virtumart, I set up joomla and went through the installation process and it installed ok, however when I try to set anything in the virtumart panel in the joomla administrator I get a page cannot be found message.

Can anyone help

Thanks

Just found the answer to the question at the top of the forum, should have searched

Thanks