When I try to launch I get: “An internal error occurred. This can be caused by a lack of network connectivity, please make sure you have a good network connection.”

If you see the following error for Amazon device: An internal error occurred. This can be caused by a lack of network connectivity, please make sure you have a good network connection.

The possible solution is to deregister your Kindle Fire HD:

1. Swipe from the top of the screen to the bottom
2. Select “More”
3. Tap on “My Account” and the choose “Deregister”
4. Register it again.

More information on Amazon Customer Support.