I installed 4.5 and now when I download a book I get a message stating Error, check activation?

[Newwestguy]

I have been using Adobe Digital for a long time.  Today I installed 4.5 version and I am now getting an error message when I download a book, telling me to check activation....

[cselhost · Accepted solution]

Hi Newestguy,

You need to manually delete the activation file and then resign in. Please follow these steps:

You must have administration authority.

On Windows it can be found here:
Open Windows Registry by using the command prompt and typing 'regedit' or by opening the start menu and searching for 'regedit'.

Search for the following folder:
HKEY_CURRENT_USER\Software\Adobe\Adept\Activation

The 'Activation' folder can be entirely deleted.

On Mac it can be found here:
In Finder, find the 'Go' option on the menu bar and click 'Go to folder' and type the following in:

~/Library/Application Support/Adobe/Digital Editions/

Delete the activation.dat file within the 'Digital Editions' folder.

Restart ADE and it should be deactivated at this point. You should be good to sign back in.