Browser Support • YouTube not showing live streams

MacOS X 10.8.5 : 34.0.1 : 64-bit browser : https://www.youtube.com/watch?v=vytmBNhc9ig / any live stream: Browser theme (if not default) : Adblock Latitude 5.0.9 and Modify HTTP Response 1.3.8 : Installed plugins: Adobe Flash 32.0.0.238 and Java Applet Plug-in 14.9.0 :

If possible, please include the output of help->troubleshooting information (as text):

Your browser can't play this video.