error when trying to install dashboard

i tried to install the dashboard on a site and got the following error:

Installing Plugin from uploaded file: 128357_wpmu-dev-dashboard-3.2.6.zip
Unpacking the package…

Installing the plugin…

Could not create directory. /home2/bnmnewpr/public_html/fringeonline.org/wp-content/plugins/wpmudev-updates/

Plugin install failed.

Return to Plugins page

how do i fix this?