I keep bumping into this error, I have no idea what may be causing it, in a statistics book with lots of math: 

registered function call [250]: ...mtx/tex/texmf-context/tex/context/base/mkxl/lxml-mms.lmt:749: attempt to index a nil value (local 'a2')

I have checked everything. I have tried commenting out many things and the weird part is that it fails in a simple math expression: \math{E_{i}j}. Even a simple $y$ or \math{a+b} will trigger the error. However, this same file Im working on has many formulas before that, those work fine. I changed all the $...$ to \math{...} just in case, but with no success. 

Already tried remaking, regenerating, updating the distribution.

Do you have any ideas to work this out? I don't know how to provide a MWE for this because it's a very big project (statistics book).  

I have tried 2 versions, the system-wide one, just upgraded: 

mtx-context     | ConTeXt Process Management 1.06
mtx-context     | current version: 2024.02.22 18:31

And a less recent version, attached to the project:

mtx-context     | ConTeXt Process Management 1.05
mtx-context     | current version: 2024.02.14 13:38

Any help will be much appreciated. 

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Andrés Conrado Montoya
Andi Kú
andresconrado@gmail.com
http://sesentaycuatro.com

http://messier87.com

http://chiquitico.org

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