Pro Audio Support

Q:
When I tried to Import Tracks from a Pro Tools v.4.3.1 Windows session into my Pro Tools LE v.5.3.2/Digi 002 session, my plug-ins were made inactive and there is no audio on my tracks.
 
A:
The workaround:Open these sessions through the "Open Session" menu option, they open and play back fine with no errors. After Pro Tools LE launches > File Menu > Open Session.