acsm

Hello,  I bought a book and they sent me acsm.  file

I didn't have adobe digital so I downloaded it, however I do have an Adobe.  

I download the book into the digital 4.5,  the full book download,  but after I close the app and try read the book it does not allow me,  it says its missing a file.

The other books are fine, I don't have any problems with it.