Wrapped plugins don't show up from old sessions

[sgladm]

Hey,

I'm bringing up a session I created a while back (on a PT LE Windows rig) that had an instance of 'plugsound free' with setting i created and really liked. I'm on a Mac now running PT 7.3.
When I bring up the session i get a message stating some plugins could not be found in the plugins folder, and plugsound free is one of them.
It is installed on this machine, wrapped and working, i just need to re-instantiate it, but then of course i'm stuck with the default setting, not the one i tweeked and want to retrieve.

I'm not sure why it's happening, but when the session comes up, it seems it's looking for 'VSTW plugsound free', whereas when i reselect it it's called 'VST plugsound free'. Could it just be the naming conventions have changed in the new versions of pro tools for wrapped plugins and therefore Pro Tools can't find it? Anyone have an idea of what i could do to have the plugin instantiated when i launch the session so i can retrieve my presets and have the session play properly?

Thanks alot,

-S