When creating a new world, the error appears "There was a problem loading this world".

The new world shows on the Worlds tab, but when selected it disappears from the list.

Once this error has occurred once, new worlds cannot even be created to replicate the error. Clicking "Create New" > "Create New World" > "Create", nothing happens, the button just doesn't seem to work.

This is replicated across four brand new Kindle Fires that were opened for Christmas this morning... None of them can create worlds, all steps and results are identical.

Uninstalling and re-installing the game allows the initial "Create" button to be clicked, but then returns the same error: "There was a problem loading this world".