Command line export on PC problem

The following opens the file fine.   From the GUI interface I can export a ps file without a problem.
C:\cygwin64\tmp>"c:\Users\gatzke\AppData\Local\Programs\LyX 2.4\bin\LyX.exe"   test.lyx

However, trying to use the command line export it fails, see below.

I have tried running from cygwin shell and cmd and both fail.

I have tried different temp directories  (/tmp, c:\Temp   and c:/Users/gatzke/temp)

Any ideas how I have failed to configure this or what may be happening?

Thanks!

BTW, recently found some of my 1997 LyX files from version 0.10, thanks devs!   :-)




"c:\Users\gatzke\AppData\Local\Programs\LyX 2.4\bin\LyX.exe"   test.lyx --export ps

C:\cygwin64\tmp>This is pdfTeX, Version 3.141592653-2.6-1.40.27 (MiKTeX 25.4) (preloaded format=latex.fmt)
 restricted \write18 enabled.
entering extended mode
(test.tex
LaTeX2e <2025-06-01> patch level 1
L3 programming layer <2025-07-20>

support\FileName.cpp (264): Could not rename file C:/Users/gatzke/temp/lyx_tmpdir.uUKcPeuBRfqn/lyx_tmpbuf0/tmpfile.out to C:/Users/gatzke/temp/lyx_tmpdir.uUKcPeuBRfqn/lyx_tmpbuf0/test.dvi
support\FileName.cpp (292): Could not move file C:/Users/gatzke/temp/lyx_tmpdir.uUKcPeuBRfqn/lyx_tmpbuf0/tmpfile.out to C:/Users/gatzke/temp/lyx_tmpdir.uUKcPeuBRfqn/lyx_tmpbuf0/test.dvi
Error: Cannot convert file
----------------------------------------
An error occurred while running:
python -tt $$s/scripts/clean_dvi.py "test.dvi" "tmpfile.out"
support\FileName.cpp (681): Could not delete C:/Users/gatzke/temp/lyx_tmpdir.uUKcPeuBRfqn/lyx_tmpbuf0
Buffer.cpp (601): Could not remove the temporary directory C:/Users/gatzke/temp/lyx_tmpdir.uUKcPeuBRfqn/lyx_tmpbuf0
support\FileName.cpp (668): Could not delete C:/Users/gatzke/temp/lyx_tmpdir.uUKcPeuBRfqn/lyx_tmpbuf0
support\FileName.cpp (681): Could not delete C:/Users/gatzke/temp/lyx_tmpdir.uUKcPeuBRfqn
LyX.cpp (425): Unable to remove the temporary directory C:/Users/gatzke/temp/lyx_tmpdir.uUKcPeuBRfqn




Version info:

Version 2.4.4
(Thursday, June 5, 2025)

Qt Version (run-time): 6.9.1 on platform windows
Qt Version (compile-time): 6.9.1
OS Version (run-time): Windows 11 Version 24H2
Python detected: 3.12.3 (C:\Users\gatzke\AppData\Local\Programs\LyX 2.4\Python\python.exe)

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