OK... that is new information...

The picture you displayed earlier is your RealTracks, so that means they are there somewhere. Did you choose to not install the RealTracks to your hard drive? Are you running from the usb drive?

Under menu Opt > Preferences > RealTracks

...it should say where your RealTracks are located. Your Loops folder should be there (but if the Refresh button did not show any, that may not be the case.)