Check
if the "Watermark" and/or "Action" registry key exist in
the following paths:
HKEY_Local_Machine\Software\Microsoft\ExchangeServer\V14\ClientAccessRole
HKEY_Local_Machine\Software\Microsoft\ExchangeServer\V14\MailboxRole
HKEY_Local_Machine\Software\Microsoft\ExchangeServer\V14\HubTransportRole
If so,
delete it and re-run the Setup file.
