Upon launching Mathematica (v. 11.3) I always get the Messages window with "An unknown menu command token (RebuildHelpIndex)...", as shown below.

Error window

How do I eliminate that?

  • $\begingroup$ I don't have 11.3 nor insight on this command but I've used MenuSetup.tr here and here, you may want to find the file MenuSetup.tr (although there were some challenges on MacOS) and look for the word RebuildHelp..., make the line comment as you do in a notebook (* *) and restart the Mathematica. I hope it helps. $\endgroup$
    – Ben Izd
    Jun 10, 2022 at 4:33
  • $\begingroup$ @BenIzd: Thanks for your thoughts and suggestions, but alas the only MenuSetup.tr on my computer is 17 years old, buried deep in backup files, and hence irrelevant to my current problem. $\endgroup$ Jun 10, 2022 at 16:51


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