Thanks for the information provided, i understand that you are not able to stream using the new Mac OS update. We have been able to identify a problem with the new Mac OS Sierra update, and our engineering department is working on a fix right now. Although some customers have successfully accessed watch.Slingbox.com through a different browser such as Chrome, Internet Explorer or Firefox.
Sling Media Support
To Sling Media Support--
When will you have an estimate of when your fix will be installed so I can watch my Slingbox with my Sierra operating system? Nearly two months have gone by since you said your engineering department is aware of the issue and is working on a fix. Please provide an update.
By the way, I've tried other browsers and they don't work with my Slingbox, either.
I just upgraded my MacBook Air to macOS Sierra v10.12.1. Now, when I try to watch my SlingBox, it sends me to a setup page. When I click on 'Get Started', I get a message: 'We're sorry, but your web browser, operating system, or the combination of both is not currently supported by the SlingPlayer plug-in.' When I click on a link for more information, I go to a page listing browsers and systems that are supported by Watch on Slingbox.com. For 10.12.x Sierra, the list includes Safari v.9 (and above), and Chrome v.52 (and above). My Safari is v10.0.1, and my Chrome is v54.0.2840.71.
I had no problem watching my Slingbox until I installed Sierra. Any suggestions on how I can fix this?