Ensure that the phone type used for emails in The Raiser's Edge is 'E-mail' not 'email' or 'e-mail'. Otherwise, Outlook will not recognize it. If this does not resolve the error:
    • Temporarily grant Power User rights to the user
    • Create the com add-in
    • Remove the Power User rights.

    Note: Consult your IT department or network administrator to perform the above steps.