At the CapellaWiki you can download a
BRAND-NEW configuration for Vienna SOLO VOICES for Capella 8 (probably running on Capella 7 too):
Vienna SOLO VOICES on CapellaWiki
Currently implemented: Soprano, Mezzo Soprano, Alto, Tenor, Baritone, Bass.
(Coloraturo Soprano still missing, sorry...)
Has been intensely tested for Capella 8 (Windows 7/10; maybe someone can test them on Mac, where Capella 8 is also natively running now).
Manuals are in German only (sorry for my laziness...), but this will not hinder installation or use.
Just give it a try...
LenoT