[lucida] Missing character

[Odd Arild Olsen]

I get a

Missing character: There is no ƀ in font Lucida Bright Math OT/OT:script=math;l

when I xelatex this file:
  
\documentclass[11pt,notitlepage]{article}
  \usepackage{fontspec}
  \usepackage{unicode-math}

  \defaultfontfeatures{Ligatures=TeX,Scale=.92}
  \setmainfont{Lucida Bright OT}
  \setsansfont{Lucida Sans OT}
  \setmonofont{Lucida Sans Typewriter OT}
  \setmathfont{Lucida Bright Math OT}
  \setmathfont[version=bold]{Lucida Bright Math OT Demibold}
  \newfontface\LucidaBlackletter{Lucida Blackletter OT}
  \newfontface\LucidaCalligraphy{Lucida Calligraphy OT}
  \newfontface\LucidaHandwriting{Lucida Handwriting OT}


\begin{document}
\[1^{1^1}\]
\end{document}

The cause of the problem is the 2nd exponent. Is this a real problem? The pdf-
output looks fine. I installed the Lucida Open Type as a system font following the 
INSTALL-sys_unix.txt I received with the fonts. I downloaded the fonts yesterday. I 
run 64 bit Ubuntu.

XeTeX 3.1415926-2.5-0.9999.3-2013060708 (TeX Live 2013)
kpathsea version 6.1.1
Copyright 2013 SIL International and Jonathan Kew.
There is NO warranty.  Redistribution of this software is
covered by the terms of both the XeTeX copyright and
the Lesser GNU General Public License.
For more information about these matters, see the file
named COPYING and the XeTeX source.
Primary author of XeTeX: Jonathan Kew.
Compiled with ICU version 51.1; using 51.1
Compiled with zlib version 1.2.7; using 1.2.7
Compiled with FreeType2 version 2.4.11; using 2.4.11
Compiled with Graphite2 version 1.2.1; using 1.2.1
Compiled with HarfBuzz version 0.9.15; using 0.9.15
Compiled with fontconfig version 2.10.93; using 2.11.0
Compiled with libpng version 1.5.16; using 1.5.16
Compiled with poppler version 0.22.2

Best regards
OAO
 
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