Thanks to M-L and Paul A. Rubin for their precious and fast helps. I didn't know about LaTeX Log And i guessthat's really usefull.. this time worke dto drive me to the right solution.
In the end it was just a directory problem, which probably is a bug too.. I solved it removing spaces for m directories. I mean: My LyX file was in ....../Document 1/document.lyx and I soved moving it to ...../Document_1/document.lyx. So, if it is not already solved in 1.5.3, i suggest everyone to avoid spaces in directories ... The strange thing is that it was able to recognise the file did exist (so no error messages were reported, but i t wasn't able to find it when having to integrate it in the document. Even srtanger is that the problem did occurr just in this case : \fancyhead[C]{\resizebox*{!}{10mm}{\includegraphics{/Immagini/e-snake.eps}}} but in this case \includegraphics[width=1\columnwidth]{Immagini/e-snake.eps} it did not have any problem. The first was filled manually in an ERT box, the second is the source behind normal LyX graphic insertion.. Lucio [EMAIL PROTECTED] wrote: .> Thank you for your reply, but ehm.. sorry for ignorance, where should .> it be and how is it named, the latex log ? .> . .Document -> LaTeX Log will display it. . .The Postscript file you are trying to display is installed on the Ubuntu .box, and the path (Immagini/Render2.ps) is correct? Is the .capitalization accurate for the file on the Ubuntu machine? . ./Paul . . .. Caminante no hay camino, solo se hace camino al andar ..