Anyone else having this problem?
The upgrade went fine, except I have 2 missing drum tracks:
RD: ** N/A ** POPSHUFFLESLOW^01-a:CLHSNR, b:OPHSNR :Shannon Forrest (RT SET 277)
RD: ** N/A ** POPROCK8THS^02-a:CLHTSNR, b:RIDESNR :Shannon Forrest (RT SET 277)

Interestingly, initially (on first upgrade) these 2 tracks were missing also:

RD: ** N/A ** ALTHIPHOP^01-a:MUTEHIHAT, b:HEAVSNRRD :Ed (Great Oz) Clare (RT SET 272)
RD: ** N/A ** ALTHIPHOP^07-a:ROLLSNRHH, b:HEAVSNRHH :Ed (Great Oz) Clare (RT SET 272)

But after downloading the Realtracks installer again (in case the first download was corrupt) and running it again, those 2 tracks did get installed.

I've even tried installing those realtracks to a different directory but so far as I can see they are simply not appearing.

2 styles are reported as being affected in Stylepicker: Hickory Southern Pop Shuffle and Slow Even-8 Garage Rock

Reported to Support but not heard anything yet.