looks like a wrong binary .. should be 2.06.02 .. can you try this binary:

http://dl.contextgarden.net/build/luametatex/x86_64-darwin/

(the farm generates two binaries for osx and it looks like the legacy machine has gone off line which happens when osx updates itself and gets stuck half way, i'll look into it)

Hans

I have the following update log entries (left column is EDT), indicating a roll-back of the binary:

2020-05-07T10:59:03  ConTeXt updated from 2020.04.30T11:15 to 2020.05.07T11:03
2020-05-07T10:59:03  LuaMetaTeX updated from 2.05.01 to 2.06.01
2020-05-07T10:59:03  LuaMetaTeX functionality updated from 20200402 to 20200506
2020-05-07T10:59:03 
2020-05-08T15:14:26  ConTeXt updated from 2020.05.07T11:03 to 2020.05.08T20:50
2020-05-08T15:14:26  LuaMetaTeX downdated from 2.06.01 to 2.05.01
2020-05-08T15:14:26  LuaMetaTeX functionality downdated from 20200506 to 20200402
2020-05-08T15:14:26 
2020-05-09T09:19:39  ConTeXt updated from 2020.05.08T20:50 to 2020.05.09T08:55
2020-05-09T09:19:39    LuaMetaTeX unchanged at 2.05.01
2020-05-09T09:19:39    LuaMetaTeX functionality unchanged at 20200402
2020-05-09T09:19:39 

Perhaps there is an problem with the installation files?

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Rik