I believe I crashed the http/s proxy when I was setting up an http/s profile. I made a proxy profile, filter assignment and filter action, then decided to delete them all. After that I couldn't access to most of the web proxy tabs, and all web access on the network was down. I rebooted a few times to no avail. Restoring a previous backup (I really really like the automatic backup!) and was back in business.
The attached pics show how it looked and the error message.