Just updated all apps to the new versions and Lightroom won't start. Mac., OSX ver 10.9.3. When I click on my Lightroom icon, the blue loading box flashes, disappears and Lightroom doesn't load. It gives no messages, just doesn't load!!!
Hi MSBPC,
Try to remove the LR app from Applications folder & re install from:
Adobe - Lightroom : For Macintosh : Adobe Photoshop Lightroom 5.5
Thanks
Mandhir