If someone could help with this it would be a great help.
So - I am aware that SP2013 has removed PowerPoint Slide Libraries but have found (on here) a way to add them back in and as a Content Part they work just fine.
However, when added as a Webpart the "Copy slides to presentation" button disappears and renders the whole concept useless!
I have found a link to a blog post explaining how to rebuild this functionality but for the life of me can not make it work.
Any pointers or help much appreciated.