This release focuses on several bugs discovered in RC5.  

• FIX: Thumbnails return 404 during web UI call #551
• FIX: Thumbnails are blank (or not included) during email notifications #549
• FIX: Web UI freezes, won't allow logins #550
• FIX: ONVIF scan does not return available paths #548
• FIX: ONVIF motion detection triggering fails #547
• FIX: onvif_tool is blank on RC5 #541

Full Changelog: v3.1.0-rc5...v3.1.0-rc6