Hyperref change breaks every document that I'm writing!

Karl Berry karl at freefriends.org
Mon Oct 7 23:41:25 CEST 2019

    Installing TeX Live 2019 from: http://ctan.cs.uu.nl/systems/texlive/tlnet

That mirror does appear to be up to date.
(scroll to the bottom) shows that latex.tar.xz and all related dated
October 5, as they should be. What does 
  tlmgr info latex
report? It should be "revision: 52286".

Assuming that's current, maybe you have an old .fmt file shadowing the
one that (hopefully) got rebuilt. Try:
  kpsewhich --all -engine=/ pdflatex.fmt

And then ls -l on the results. Normally there should only be one, and it
should have the same October 5 (plus/minus depending on time zones) date.

Hope this helps,

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