edit: just noticed 'Muse' in your title.
Is Muse anything to do with Digital Editions.
Maybe you should post on a different forum?
I didn't think there was an iPad edition of ADE.
I thought it was necessary to download an ereader app such as Bluefire.
If you have downloaded such an app and are using it, let us know which app it is.
If it isn't Bluefire, try Bluefire which works well on my iPad.