Math macros don't show up in pdf output

[Dan Kilman]

Hi there,

I am using LyX 1.6.5 on Windows XP installed via the alternative installer.

When I define math macros, they seem to be working just fine while editing
the document (that is, I can use them).
However, when I try to view the document as a PDF or DVI, every part of the
document not using math macros shows up in the output (as it should),
while the math macros seems to be simply ignored, with no error message of
any sort.

Any advice on this matter?

Thanks in advance, Dan.