Thanks David. I’m actually running a test site locally on MAMP rather than continue to mess up my own site while I work this out.
That completely fresh install has only WordPress 4.5.3, the latest Atelier build, and the required plugins (all updated).
I was hoping to simply study the settings in the demo site in order to fully understand how to configure this type of layout. However immediately after importing the main demo content I see that the multi-masonry images are not aligned (as per my screenshot in the last post). In your live demo version they are aligned.
I have not changed any settings at all, I’m therefore a bit confused as to how this is supposed to work.
Thanks, Gareth