Your computer must be restarted before updating can continue
You can check kernel panic logs for more information.
See the Additional Information section of this article for guidance.
If you believe the issue may have been caused by one of the apps that you were using, click Cancel instead.
If you don't click anything for 60 seconds, OS X automatically continues as if you had clicked Open.
Note: If your computer is unable to recover from the issue, it may restart repeatedly, and then shut down.