When I access Admin-->Modules-->Payment, the status of the Paypal Website Payments Standard - IPN Module is "Processing" rather than "Default". When I select this module, I get an error message "Not Acceptable. An appropriate representation of the requested resource /Admin/modules.php could not be found on this server." I can process payments currently with no problems.

However, I would like to uninstall the re-install the module as a means of correcting it but since I cant access it, I cant do it through Admin.

Can someone advise as to how to do this through cPanel instead?

Also, I need to upgrade from 1.3.9d to 1.3.9h. Should I upgrade first and then uninstall or does it matter?

Many thanks in advance.