I am running MS Office Home & Student 2010 and One Note 2013. I had my computer synced to my iPad and could open my Notebook on my iPad. Recently they came out with "apps" for Excel, Word & One Note and when I tried to open One Note I was advised that there was an upgrade. So I upgraded and now my Notebook does not appear. As far as I can see there is no longer any other choice to download on to the iPad.