Moving to Lightroom forum for assistance
May i know are you still facing the issue.
Please check for the update for Lightroom 6
I have just an update on Lightroom. It keeps shutting after 30 seconds. I have also just installed a new OS for Mac called Capitan.
Is the problem Lightroom, Capitan or a mixture of the two?
How do I fix it?
If it is happening to both Lightroom 5 and Lightroom 6, the problem is almost definitely is your operating system.