Would you be able to send us a log file the next time the problem occurs? Is it just youTube that is having problems, or every site/stream? If it is only YT, then how far do you get before you get an error. A screenshot of the problem as well as a link we can test would be helpful as well.
You can find it in Jaksta by going to Preferences > General > Find Log File
We should be able to get a better idea of what is going on from that.
I have a Macbook Pro running OS 10.10.5.
Can't get the Media Recorder to work with YouTube. I searched for hours how to fix this problem. I even uninstalled program and re installed it, but nothing has worked.
Thank you very much.