On 12/07/2019 11:21 AM, Brian Davis wrote:

How is it possible to have 3 working versions of LyX/MikTex on three different computers (all Windows) and have them all break within a couple of weeks without doing anything (except allowing Windows Updates)?

I have been receiving errors after latest windows updates on 3 different machines all were running successfully LyX and MikTex and stopped working out of the blue with the following type errors:

The process latex icon bottom right just spins for minutes then:

LyX: Stop command?

The command pdflatex "test.txt" has not completed.

Do you want to stop it?

Stop it Let it run

If Let it run:

Does not matter which it will still fail either way.

LyX: LaTeX failed:

The external program

pdflatex

finished with an error. It is recommended you fix the cause of the external program's error (check the logs)

And right about now I certainly wish LyX would make the error text boxes where the text can be copied an pasted into an email.... sigh.

I currently upgraded to latest Lyx and MikTex and performed the typical LyX -> Reconfigure and restart Lyx only to still find Unavailable: Article (Standard Class) and still above errors as though LyX cannot find MikTex even though Tools->TeX Information finds .cls files in the MikTex 2.9 directory in Program Files (x86)

basic-miktex-2.9.7100-x64.exe

LyX Version 2.3.3

(Monday, June 10, 2019)

Library directory: C:\Program Files (x86)\LyX 2.3\Resources\

User directory: ~\AppData\Roaming\LyX2.3\

Qt Version (run-time): 5.11.3

Qt Version (compile-time): 5.11.3

Anyone else experience this?
It is super-awesome!

I'm running LyX 2.3.3  with MiKTeX 2.9 on windows 10 without problems. However, after a MiKTeX update a week (or two? -- memory fades) ago I had a problem compiling documents which previously compiled successfully. There was a pdflatex error, the little circling busy sign continuing endlessly. The problem was the absence of the LaTeX3 package l3backend which is a new package required for the working of expl3.sty which LyX requires. Check whether you have l3backend installed.

Andrew

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