Compilation error with Lyx 1.4.1

[Carine Simon]

Hello,

I’ve just installed Lyx 1.4.1 under Windows XP with
lyx-1.4.1_win32_setup_v1.exe
<ftp://ftp.lyx.org/pub/lyx/bin/1.4.1/lyx-1.4.1_win32_setup_v1.exe> . I
am using the sh.exe under cygwin, the Python 2.4, the gs8.51 and
ImageMagick6.7 Q16. 
I can start Lyx with no problem and download a file. But when I want to
compile it with DVI from “edit” menu, I’ve got the following error:
---------------------------
Subsistema MS-DOS de 16 bits
---------------------------
5367625/3432
La CPU NTVDM ha encontrado una instrucción no permitida. (CPU NTVDM has
found an unallowed instruction)
CS:0fa9 IP:21c6 OP:63 6c 61 64 6f Elija "Cerrar" para finalizar la
aplicación.

And then 


Would you know where it can come from?
Thanks in advance,
Cheers,
Carine.