A minimal example below


  Hello, world.

Gives me:

! Undefined control sequence.
<argument> ...g_pbs_bop_seq {##1}}\box_use_drop:N 
                                                  \@outputbox \hbox_overlap_...
l.7 }

closed as off-topic by user36296, AlexG, Zarko, user4686, Phelype Oleinik Jan 14 at 11:25

  • This question does not fall within the scope of TeX, LaTeX or related typesetting systems as defined in the help center.
If this question can be reworded to fit the rules in the help center, please edit the question.

  • 4
    That error suggests your expl3 version doesn't match animate: what TeX system do you have? – Joseph Wright Jan 13 at 9:56
  • 3
    update your TeX system and try a again – user2478 Jan 13 at 9:56
  • 4
    The example compiles without error for me. What versions of beamer, animate and expl3 are you using? I have beamer 2018/12/02 v3.55, animate.sty 2018/12/19 and expl3.sty 2019-01-01. You can find out your package versions easily if you add \listfiles to the start of your MWE file, the versions will then be listed in a convenient table in the .log file. – moewe Jan 13 at 9:56
  • 4
    animate depends on expl3 via pdfbase.sty contained in media9. A full package update of the TeX distribution should fix everything. – AlexG Jan 13 at 11:07
  • 4
    I'm voting to close this question as solved by update – user36296 Jan 14 at 11:04

Oops, the TeX distribution was not up to date. Updating it solved the problem, sorry for polluting StackExchange with my silly question.

  • 1
    So, I think we can close this question. This is the standard procedure for problems that can be solved by package updates. – AlexG Jan 14 at 11:03
  • (Don't feel offended by the close reason in the box below the question. It was automatically generated.) – AlexG Jan 14 at 21:08
  • That's OK, my mistake – Arnaud Jan 15 at 12:18

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