Joost Verburg wrote: >Can you try to start a command prompt (Start > Run > cmd), go to the LyX >directory using cd, and type lyx.exe? What output does it show?
Exactly what I wrote in my previous message: the program cannot be executed. The same happens if I try to execute lyx.bat -- that's why I was sayng (as a person who knows nothing about Windows) "this looks as a permission error". Really lost! Thanks, Guido, Italy -- Guido Milanese Vocal Ensemble Ars Antiqua, Genova (Genoa), Italy http://www.arsantiqua.org
