Unable to download

[#1]

Does anyone know this error. I get the when I try to download a acsm file (a book)

regards

carsten

[#2]

For me it worked to erase the previous activation of my computer and then activating it again with my adobe ID.

[#3]

Thanks.

It did not work for me. I downloaded the adope app on my iPad in stead and opened the book her.