LyX Layout file for custom class using XeTeX

[Daniel Owens]

I am working on a dissertation class for my school, and I need to use 
XeTeX. The class is working well using LaTeX, but when I create a layout 
file for LyX to use the class, it ignores the commands for using 
TrueType fonts, so Greek is not typeset. I don't have this problem in 
LyX if I just use a *.sty file instead of a class. Then LyX handles 
XeTeX very well. Does anyone have any theories about what is going on? 
The only thing I can think of is that my layout file is doing something 
to interfere with XeTeX. It compiles okay just without the right fonts.

Daniel