Hi, when I include a .epsi file, Lyx will display it correctly (after converting it to PNG). However, when Lyx creates the DVI file in the end, it will not include the EPS file directly but convert it to PNG and then back to EPS. The same goes for Postscript output. This creates unusable Postscript but can at least be worked around by converting the .lyx file to LaTeX and running LaTeX manually. But it should be fixed in Lyx itself of course.
-- Regards, Cyrille Artho