I can't bring up the broadcast to livestream. Black screen instead of screencast?

Question

macOS

My task is this. Tell a few people over the internet the basics of Photoshop. First of all, I climbed on the familiar ustream and livestream. But before I had to broadcast only video from the camera through these resources and there were no problems.
It was useful to understand what and how, I realized that the livestream service allows you to broadcast in high quality for free. As a result, the Livestream for producer program captures the image from the webcam and the screen I need, but instead of the usual desktop, I see a black rectangle on the screen, the mouse on a black background is visible in the broadcast. I looked through a few settings, but did not find anything similar.
Now I ask for your help. I don't know what to do now.
Hardware - Macbook Pro 2011 with 10.8.2.

Answer 1

And why don't you use the same join.me/ and hold a webinar without any gems. There is a lot of software for this, the same Skype has a screen sharing function

Answer 2

use google hangouts