Over the years we've collected a large list of ways that systems can be misconfigured that can get in the way of viewing and recording. The list keeps growing and I wanted to start making progress on it, so I've started with a few and hope to continue to expand the list as I can.
This is very new and is a work in progress. In the future we plan to improve the text as well as link to relevant documentation to describe how to fix these issues.
To try it out, update to the latest DVR beta and go to http://localhost:8089/admin/troubleshooting
Please let us know if it turns up any surprising results.