Well, it works here.
Electronic Download?
Separate files for the new RealTracks, maybe you missed one or the other, either at the download or during the Install-a-thon we have to go through for that.
My download folder shows realtracks70-1.exe & 70-2 thru realtracks82.exe, inclusive.
Check in Help -> What addons do I have? See if it reports any missing.
Try again from scratch?
Call Support Directly if nothing else. I'm sure they can straighten it out.
'Luck,
--Mac