error "You can only authorize this computer with an Adobe ID that hasn't been previously used to authorize another computer or mobile devices. Please try again." I got a new computer and downloaded ADE 3.0 and now I can't get transfer ebooks to my kobo a

[khadobedigreader]

I got a new computer and downloaded ADE 3.0 and an ebook from the library to it but it won't let me transfer the ebook to my kobo.  This worked fine on my old computer.  How do I fix this?  When I check my kobo it says it's authorized and gives me an adobe ID number.

[Nanaky]

Windows:

    Close all applications.

    Choose Start > Run.

    In the Open text box, type regedit and then press Enter. The Registry Editor opens.

    In the left pane of the Registry Editor, locate the following registry key: HKEY_CURRENT_USER\Software\Adobe\Adept

    Select the Adept key.

    Choose File > Export.

    In the Export Registry File dialog box, select Selected Branch under Export Range. Enter a name and location for the backup registry key, and then click Save.

    Right-click the Adept key and choose Delete.

    In the Confirm Key Delete dialog, click OK.

    Close the Registry Editor.

    Open Adobe Digital Editions and reauthorize.

Macintosh:

    quit Adobe Digital Editions.

    Navigate to /Users//Library/Application Support/Adobe/Digital Editions and drag the activation.dat file to the trash.

    If you are using 10.7, see https://helpx.adobe.com/x-productkb/global/access-hidden-user-library-files.html

    Open Adobe Digital Editions and reauthorize.