I have a macbook pro 13 inch, running OS 10.12.6, sierra. I'm on lightroom version 6.7.
I was captioning some images when LR crashed. When I try to reopen I get the 'Lightroom quit unexpectedly' message. The reopen button doesn't work. I've rebooted, but the same thing happens. As LR wont launch I can't change the preferences or the GPU setting.