OK Scrap that.
I found another thread on the issue and went into the settings to play around a bit. All working fine now and it seems I do have lightbox somehow as changing that setting sorted it 😀
@judetheobsure, it would be great if you could link to the thread and/or let us know what you did?
It was this thread: http://ww.wp.xz.cn/support/topic/image-in-new-window?replies=2
So many settings with the new gallery which I hadn’t even realised were there. Will have to have a play around with all of them later to get the image sizes right, but setting the Lightbox option to Lightbox rather than Thick?? did the trick for me.
