So to avoid the problems, turn off Instant preview.
Sorry to say, but the instant preview facility is the reason I came to LyX
and have been sticking with LyX happily since its been available for
Windows..
I am quite fluent in LaTeX and without the possibility of instant
previewing I
would have equally happily stayed with WinEdt.
The main reason for using instant preview is that I am using the xy-pic
package.
I have written a manual of how to use it from within LyX , see
http://www.mathematik.uni-marburg.de/%7Egumm/LyX/xypic/xypic.pdf
From the screenshots, you can also see that the LyX Math editor alone
is not
of much use when using xy-pic.
So any help is appreciated. But the advice to turn instant preview off is
equivalent to saying "quit LyX".
H.Peter Gumm