EDIT: Rob just seen your last post

I downloaded from here: http://www.xara.com/uk/photo-graphic-designer/download/ - [the trial version as I don't have a current 365 licence, just curious about the latest 'fun packed' features... ]

I didn't get error messages either during installation - it was installed clean, once, on a computer OS image that has not had P&G installed before - it is in '7 day' trial mode