[Avid]

It sounds like you did a clean install of Pro Tools 6.2.3, so you shouldn't have to reinstall it. The warning has to do with having older versions of the optional plug-ins already in your plug-ins folder, then downloading and installing Pro Tools 6.2.3 on top of an older installation. In that scenario, you would want to download and install the updated plug-ins before launching Pro Tools.

In your case, however, you installed Pro Tools 6.2.3 from the web installer, meaning none of the optional plug-ins were installed. Just download the optional plug-ins for your system and install them. Shouldn't be a problem, particularly since you have already properly installed Pro Tools 6.2.3 and the included DigiRack plugs.