I have just had a reply from a team leader at Sqaurespace about my issue with the gallery, which I have copied below.
I find it unbelievable that they can make such a fundamental change without either asking, or informing, its thousands of users, and all because someone asked for it in a forum.
I moved away from wordpress because I wanted a more stable platform, where I didn't have to worry about updates changing things any more. I spent a lot of time testing my site to ensure it worked perfectly before the changeover, and yet less than two months later, I am in a worse position than