Thank you Paul for all your help.
Adding path to GS in lyx.bat did not solved the problem.
I have this feeling that the problem is somehow related to the postscript
commands inside the figure...
I'm giving up and going back to use version 1.4.1.
Cheers
Leo
One other difference I notices is that I have the Ghostscript bin and lib
directories on my system command path, and you don't. You must have them
(as do I) in LyX Tools->Preferences...->Paths->PATH prefix, which LyX
attaches to the command path when it shells out to a script. (In my case,
they end up on the path twice, which is harmless.) I don't suppose that
adding them to your path fixes the bug? (An easy way to try this on a
temporary basis would be to add the line
SET PATH=C:\<path to GS>\bin;C:\<path to GS>\lib;%PATH%
to the lyx.bat file, prior to the start command.)
I have no idea how a couple of environment variables and the length of the
path to the target file can be interacting, other than if they're both
being written to a common buffer somewhere (which is overflowing), and
that seems rather unlikely given that I would be putting more stuff in the
buffer and not seeing the problem.
/Paul