plugins on multisite not activating on sites

Hi,
I am trying to install a number of plugins on my multisite such as ultimate branding, new blog template. I have installed them manually into wp-content/plugins/ and unzipped them. They show up in my network admin dashboard and I can network activate them without error. However, they do not show up in any of my sites to activate and use. Can you help me troubleshoot please. I am on wp 3.6 at the mo
Thanks