[XeTeX] Class not complete?

[Annie_Olsen at sil.org]

Hello--

I am using XeTeX from TeXLive 2007 in WinShell 3.3.0.3 on Windows Vista.

I created a new class, A, in a proven font-testing document:
\class A {\N{uni02A5}, \N{uniA728}, \N{uniA729}, \N{uniA732}, \N{uniA733}, 
\N{uniA734}, \N{uniA735}

Then I substituted that class for one that was previously there, called M:
\sizes={10,11,12}
\columns=3

\dotext n at An@An at Ao@An at Ao@Ao at Af@Ag

\vfill
\eject

I don't understand this output:
This is XeTeXk, Version 3.141592-2.2-0.996 (Web2C 7.5.6)
 %&-line parsing enabled.
entering extended mode
(./Rom Basic Portrait Andika Eric.tex
(c:/TeXLive2007/../texmf-local/tex/font-tests.tex)
Runaway argument?
{\N {uni02A5}, \N {uniA728}, \N {uniA729}, \N {uniA732}, \N {uniA733}\ETC.
! Paragraph ended before \class was complete.
<to be read again> 
                   \par 
l.22 

<snip>
Output file removed.
 [5fwrite: Invalid argument

(There were several other errors in the output, but those pertain to 
glyphs that I *know* are missing in this particular font, so those are not 
a problem.)

What's missing/wrong in the way I wrote this?

Thanks,
Annie Olsen
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