I'm getting the below error:
Unfortunately the integrated Twitch broadcasting on Mac requires a version of OSX newer than the one you are on. You must use 10.7 (Mac OS X Lion) or newer to be able to use this service. Would you like to visit apple.com to learn about upgrading?
But as you can see from above, I'm running 10.7.5.
Duplicate of MC-40529 - If you have not , please use the search function in the future, to see if your bug has already been submitted. If you could not find the original report, please comment with the keywords you searched for.