About this blogger:
A theorist, organist, and conductor, Jeff Ostrowski holds his B.M. in Music Theory from the University of Kansas (2004), and did graduate work in Musicology. He serves as choirmaster for the new FSSP parish in Los Angeles, where he resides with his wife and children.
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“More and more as we grow older, we find that the people we see most of are recent acquaintances; not (perhaps) very congenial to us, but chance has thrown them in our way. Meanwhile, the people we used to know so well—for whom we once entertained such warm feelings—are now remembered by a card at Christmas (if we can succeed in finding the address). How good we are at making friends, when we are young; how bad at keeping them! How eagerly, as we grow older, do we treasure up the friendships that are left to us, like beasts that creep together for warmth!”
— Msgr. Ronald Knox (1888-1957)
Editio Vaticana Errata
published 7 November 2010 by Jeff Ostrowski

As great as the Editio Vaticana is, it is not perfect in every detail.

Joseph Gogniat points out that the Vatican Edition sometimes fails to mark each liquescent:

Here is another instance where liquescents are missing:

N.B. This example was taken from Cantus Selecti, which is not (strictly speaking) part of the Vatican Edition.