I just upgraded my Mac to OS 10.11 (El Capitan). I use the Slingbox desktop browser to watch on a second screen (Samsung TV). I drag the Slingbox window to the second screen and make it full screen to watch my show. With the update I can still drag my Slingbox window to the second screen but when I go to full screen mode it puts the full screen on the Mac and the Slingbox window on the TV turns white. Any ideas or is this going to require an update from Slingbox? I looked at the screen settings within the Mac and those are correct. Thanks.