I am working with a wpmu installation. We are setup to install plugins by using subversion to copy the files to our server, then logging into the super admin to activate plugins for the sites that use them. I successfully installed two other plugins this way, but wp-pagenavi does not work; I do not see it on the list. It is in the folder on the server, but not appearing when I log into WordPress and click on the Plugins menu. Research hasn't turned up a solution. Any thoughts on how to resolve this?