I just noticed on the Best Service site that they released an update and patch in January 2017 for their Era II Vocal Codex. Apparently a couple of instruments were missing from some peoples' installs (Celtia Hmmm-Mmmm articulations), so this patch adds that missing content back in:
 
https://www.bestservice.de/en/downloads.html
 
I did not have these extra instruments, so its nice to get some unexpected new goodies for this library.