I have a 40GB Photos library on my 2010 13" Macbook Pro, which is running macOS Sierra Public Beta. I just purchased a new 2016 13" TB Macbook Pro, which is running a stable release of macOS Sierra (10.12.2).
I copied my Photos Library from one to the other, thinking it'd be a simple switch. My new machine however refuses to recognise the library, I'm assuming because the library was used on a machine running the (more "up-to-date") beta.
My question is, what's the simplest way for me to import my photos into my new machine? will I have to resort to putting it on the public beta as well?