I'm having trouble installing a plugin 'Ultimate Branding'

Hi,

I'm having trouble installing a plugin 'Ultimate Branding' When I click Install, the button says 'Downloading' then changes to 'Error' I cant see any information why this is happening, from what I can tell it's only this plugin so far that does this, It was the first plugin I tried installing but I didn't try again until now but still have the same problem, Please can you help why this is? I'm trying to install through the WPMUDEV Dashboard.

Thanks