I just upgraded from Mint19 to 20. A tex file (20 000 lines) was compiling without error in Mint19. Now I get either 1 or more than 100 errors! The following minimal example shows the dilemma:

    \coordinate (H2) at ({-sqrt(13)/11},{6/11}) ;
    \coordinate (H1) at ({-11*sqrt(13)/49},{66/49}) ;
    \coordinate (Gn) at ({-sqrt(13)/11},{18/11}) ;
    \fill (H1) circle [radius=0.5pt];
    \fill (H2) circle [radius=0.5pt];
    \fill (Gn) circle [radius=0.5pt];
    \draw[red, thin] (Gn)--(H2);
    \draw[red, thin] (Gn)--(H1);
    \draw[red, thin] (H2)--(H1);
\tkzDrawCircle[diameter, ultrathin](H2,Gn)
\draw [right angle quadrant=1,right angle length=0.9,right angle symbol={H2}{H1}{Gn}];


With Mint19 installation this was working fine with the line %\usetkzobj{all} commented in. It fails with Mint20, but the solution seems straightforward: comment it out (from here). When I do this the last two lines gives an error

Package pgfkeys Error: I do not know the key '/tikz/right angle quadrant...'


Package pgfkeys Error: I do not know the key '/tikz/ultrathin' ...

With the original file I get more than 100 error mostly from packages pgfkey, pgf and also lots of undefined control sequences such as

Undefined control sequence. \tkzDrawAltitude...

I checked the tkz-euclide version installed by Mint20: it is 3.02c, so yes I have to comment out the \usetkzobj{all} line, but this is not a sufficient solution, before I reinstall everything, Mint and TeXLive :-( , may be there is a work-around?

Here the \listfiles result

 *File List*
 article.cls    2019/12/20 v1.4l Standard LaTeX document class
  size10.clo    2019/12/20 v1.4l Standard LaTeX file (size option)
tkz-euclide.sty    2020/01/24 3.02c for euclidan geometry 
tkz-base.sty    2020/01/24 3.02c tkz-base
    tikz.sty    2020/01/08 v3.1.5b (3.1.5b)
     pgf.sty    2020/01/08 v3.1.5b (3.1.5b)
  pgfrcs.sty    2020/01/08 v3.1.5b (3.1.5b)
everyshi.sty    2001/05/15 v3.00 EveryShipout Package (MS)
 pgfcore.sty    2020/01/08 v3.1.5b (3.1.5b)
graphicx.sty    2019/11/30 v1.2a Enhanced LaTeX Graphics (DPC,SPQR)
  keyval.sty    2014/10/28 v1.15 key=value parser (DPC)
graphics.sty    2019/11/30 v1.4a Standard LaTeX Graphics (DPC,SPQR)
    trig.sty    2016/01/03 v1.10 sin cos tan (DPC)
graphics.cfg    2016/06/04 v1.11 sample graphics configuration
  pdftex.def    2018/01/08 v1.0l Graphics/color driver for pdftex
  pgfsys.sty    2020/01/08 v3.1.5b (3.1.5b)
pgfsyssoftpath.code.tex    2020/01/08 v3.1.5b (3.1.5b)
pgfsysprotocol.code.tex    2020/01/08 v3.1.5b (3.1.5b)
  xcolor.sty    2016/05/11 v2.12 LaTeX color extensions (UK)
   color.cfg    2016/01/02 v1.6 sample color configuration
pgfcomp-version-0-65.sty    2020/01/08 v3.1.5b (3.1.5b)
pgfcomp-version-1-18.sty    2020/01/08 v3.1.5b (3.1.5b)
  pgffor.sty    2020/01/08 v3.1.5b (3.1.5b)
numprint.sty    2012/08/20 v1.39 Print numbers (HH)
   array.sty    2019/08/31 v2.4l Tabular extension package (FMi)
     xfp.sty    2020-02-14 L3 Floating point unit
   expl3.sty    2020-02-14 L3 programming layer (loader) 
l3backend-pdfmode.def    2020-02-03 L3 backend support: PDF mode
  xparse.sty    2020-02-14 L3 Experimental document command parser
      fp.sty    1995/04/02
defpattern.sty    1994/10/12
fp-basic.sty    1996/05/13
fp-addons.sty    1995/03/15
 fp-snap.sty    1995/04/05
  fp-exp.sty    1995/04/03
fp-trigo.sty    1995/04/14
  fp-pas.sty    1994/08/29
fp-random.sty    1995/02/23
  fp-eqn.sty    1995/04/03
  fp-upn.sty    1996/10/21
 fp-eval.sty    1995/04/03
epstopdf-base.sty    2020-01-24 v2.11 Base part for package epstopdf
epstopdf-sys.cfg    2010/07/13 v1.3 Configuration of (r)epstopdf for TeX Live
  • Send an email to Alain Matthes, maintainer of tkz-euclide to see what he can do. You will find his email address by clicking on his name at the bottom of page 2 of the manual Please report typos or any other comments to this documentation to: Alain Matthes
    – AndréC
    Aug 19, 2020 at 21:07
  • the current version (as in texlive 2020) is 3.06c so perhaps the issue is fixed, you could get an update from ctan or the git source repo github.com/tkz-sty/tkz-euclide (where issues can also be reported) (unrelated but size commands do not take an argument \Huge{...} the brace group does not limit the scope of \Huge which applies to the whole document. Aug 19, 2020 at 22:36
  • with the current version I get ! Package pgfkeys Error: I do not know the key '/tikz/ultrathin' (ignore any errors after the first) Aug 19, 2020 at 22:38
  • in texive 2016 the ultrathin error goes but the right angle quadrant key used in the test file still gave errors, has that example ever worked? Aug 19, 2020 at 22:43
  • Yes the right angle quadrant was working. I had no error with this code... and \Huge is not part of the initial document :-)
    – c05772
    Aug 20, 2020 at 0:27


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