I've owned a sling product for over seven years and this is just a sad state of affairs.
Want to know how bad it is? Brand new laptop with fresh 8.1 OS on it. got the chrome extension for sling and it tried to walk me through setup for one of my slingboxes. they all worked before this new extension..........
Lucky on my old win7 PC, I have not updated my desktop still using these versions.(below) It works fine for now.
Slingplayer Desktop Version
184.108.40.206Web App Version
220.127.116.11Player Plugin Version
18.104.22.168Wi-Fi Plugin Version