[tlbuild] How should xetex find texlive fonts?

[Akira Kakuto]

> (/usr/local/texlive/2009/texmf-dist/tex/generic/hyph-utf8/loadhyph/loadhyph-sa.
> tex UTF-8 Sanskrit Hyphenation Patterns (v0.2, 2008/1/3)
> (/usr/local/texlive/2009/texmf-dist/tex/generic/hyph-utf8/patterns/hyph-sa.tex
> ! Nonletter.
> l.486 2
> 
> ?
> ! Emergency stop.
> l.486 2
> 
> No pages of output.

i remember similar errors in native win32 binary xetex.exe.
problems in the pattern file or ...?
-- 
Akira Kakuto