Trying to update product keeps bringing me back to admin login page

[websmith]

Joomla 3.6.5 VM 3.0.18.5

For the last couple of days every time I try to edit a product and save the system kicks me back to the admin login page. Ive tried clearing system cache and expired cache and still the same problem. Any other places to check to fix this issue?

[Studio 42]

Have you check your Joomla rights for Virtuemart ?