Unable to connect using watch.slingbox.com on Safari (Version 10.0 (11602.1.50.0.10) for Mac OS X El Captain using WebSlingPlayer (SlingPlayer_Plugin_220.127.116.111). Reinstalled plugin and still doesn't work.
Used to work fine until i updated the latest Safari 10 security update - https://support.apple.com/en-us/HT207157.
It appears the Slingbox plugin is no longer compatible with Safari 10's security for plugins. Went to Preferences/Security/Internet Plug-In/Plug-In Settings. There is a warning message that says... ""WebSlingPlayer Plug-in" does not support the highest level of security for Safari plug-ins."
However, works with IE on Windows 7. Also, works with SlingPlayer for Desktop app on El Captain.
Need a patch for Safari 10!!!