If you run into serious bugs in the latest Lightroom update, you can roll back to a previous dot release. Here’s the step-by-step: Uninstall Lightroom.  On Windows, you can do this from the Add/Remove Programs screen. On Mac, navigate to Applications > Adobe Lightroom > Uninstall Adobe Lightroom. Download and install the 2015.0 / 6.0 release from https://helpx.adobe.com/lightroom/kb/lightroom-downloads.html… Click to continue