After having issues with the latest patch (KB3159706), I had to restore my entire Configuration Manager server from backup and reapply the update. Since then, I am unable to run summarization on Update Deployments that had occurred prior to the patch. I am getting the following error:
"The summarization request for this deployment failed. To run summarization, you must be granted deployment rights for the selected item."
No security settings have changed on my server and I'm not sure what log file to look at for additional information.