Lightroom CC (2015.6.7) had some significant updates today.
Compatibility fixes for macOS Sierra
For Mac users.
Compatibility fixes have been made in this release of Lightroom so it runs smoothly when you update to macOS Sierra. Adobe recommends updating to Lightroom CC 2015.7/Lightroom 6.7 before updating to macOS Sierra. Lightroom CC 2015.7/Lightroom 6.7 on Mac requires Mac OS X 10.10 (Yosemite) or later. Read More…