I recently downloaded the DSF Volume 3 Vocal Expressions pack for Dimension Pro and one of the Choir Progs won't work (the rest do). When attempting to select Expressive Choir I get a "Multisample Not Found DSF Choir.sfz" message. I redownloaded and reinstalled but still no joy. I did a search in the multisample folder and the DSF Choir.sfz is there. Help? Thx, Mike F.

Maybe the file didn't install cleanly. Try reinstalling it. 

If DimPro finds files that are right next to it, I'd check the spelling of the filename in the folder where it resides
and the spelling of the reference to it in the relevant program file (the xx.prog file that contains the reference to your DSF Choir.sfz file )

If the spellings match, maybe take a look at file permissions.

What happens if you load the DSF Choir.sfz file directly into an element using the built-in browser ?