Can't save newly created h5p on Wordpress
I'm using a new instance of Wordpress 3.9.1 using the Responsive theme.
I've installed H5P and the file to enable creation of Interactive Videos. I can upload the underlying video and create all of my interactions but cannot see a way to save my work.
When I go back to the "All H5P content" tab, my new video isn't there.
I've tried this on both Safari and Chrome with the same result. I am using a JustHost account, in case that's relevant, as I noticed this being raised on another topic in which someone couldn't upload.
My apologies if the answer to this question is trivial.
Thanks in advance for your help.