I have no issue downloading ebooks from other sources into ADE, however when I download acsm's for books from Google Play, either for pdf or ebook, I receive this error. I also have no firewall and have updated ade and restarted.
This siolution, worked for me:
After you've gone through the above steps, try downloading the title again.
error 2038 IO Error on Network Request. Please check your network connection and try again.
Retrieving data ...