User Roles not performing as expected

When I assign a user the role of admin, they can't see the csvImport plugin in the menu on the left of back-end admin interface. It's there and works for super users, and according to documentation at http://omeka.org/codex/User_Roles, admins should be able to use plugins, so I assume they can use csvImport, too?

We're using Omeka 2.0.

Admins are specifically denied access for CsvImport.

It's a one-line change in the main plugin file if you don't think that restriction is appropriate.