LyX 2.4.0 Alpha 1

Baris Erkus bariserkus at
Wed Jan 13 21:18:30 UTC 2021

On 13-Jan-21 7:51 PM, Richard Kimberly Heck wrote:
> We are pleased to announce the release of the first alpha for LyX 2.4.0.
> You can find source tarballs and binaries for Windows and OSX here:
> See this page
> for a description of new features and updates. As you will note, there
> are quite a few of those.
> As always with alpha software, this is released only for testing
> purposes. While some of the developers have been using this version, and
> we believe it is fairly stable, there are likely to be some unpleasant
> surprises. That said, we would greatly appreciate testing, especially on
> Windows, where we have few developers.
> Should you run into a problem, please report it on our bug tracker:
> (You may need to register, if you haven't already.) If you have
> questions or comments, or aren't sure if what you have found is a bug,
> please email the developer's list at lyx-devel at
When I tried to open my LyX file with 2.4.0a1 64 bits, it gives 
the error "Error reading module theorems-ams-bytype."

Because I have mother document with many child files, it constantly 
gives this error, so I have to kill the program. I attached a MWE that I 
created in LyX, with empty contents but with Theorems (AMS, 
numbered by type) module added. So it gives the error once and the file 
opens. Then if I go o document properties and it shows the module 
activated. Anyhow, this was not the case for 2.4.0 development version 
that I have installed couple of weeks ago; it was working just fine.

I have windows 10, 64 bit, and the very latest version of MikTeX installed.

Also, how to we active the dark mode in Windows :) ? Anybody knows?

Please bottom-post. Start your reply here:

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