It seems like an network issue, need confirm your network connection is fine
I tried it at 4 different places, and it doesn't start up even if I'm offline.
Was it working fine before? Can you post more detail here?
It was working until about one week ago. When I click on the app, a message displays "The channel 'YouTube Featured" is not available." It does that if I am not connected to the internet. It normally does that, but what is different is that the message pops up with a lot of lag. It normally takes 15 seconds to pop up. Then about 10-15 seconds later it closes the app. If I'm connected to the internet, the app just closes in about 30 seconds.
The latest version 2.2 is submitted for review, just wait it to be released and update your mediaburner. The issue should be fixed in version 2.2.
Customer support service by UserEcho