I am trying to fix a NetStorage problem at a customer site, giving this
error when attempting to access NetStorage:

Server error!
The server encountered an internal error and was unable to complete your
request. Either the server is overloaded or there was an error in a CGI

If you think this is a server error, please contact the webmaster.

Error 500
However, Apache is working and I can also login to iManager. When I do log
in to iManager as Admin and try to access some options - eg Basic Repair
under the eDirectory Maintenance option - I get this message:

Error: Insufficient access
You must configure RBS and be explicitly assigned this task in order to
execute it.

PKIDIAG does not give any errors and I have reviewed various TIDS and forum
responses, but am at a loss as to why NetStorage has stopped working, when
it has worked well for some time. Any suggestions would be greatly