Yes I did that when the link took me to your web-site but the problem remains.
You mean the problem of getting a message of the Addon Manager is outdated ? If yes, then sorry, you haven't done that correctly, since the updated files are automatically downloaded from our site while the installer runs, it's not possible to get outdated files by mistake.
You said you turned off the antivirus and excluded the files from scanning, are you sure you did it correctly ? That might be another possible cause of getting an outdated file by mistake: the antivirus is blocking the installation, so you are still stuck with an older version.
Maybe you have another similar software (anti-spyware, firewall, etc. ) that is still active ?