[tex-live] pool problems with xe(la)tex on win32?

[Michel Goossens]

Hello, this morning I tried to run the latest version of tl2010 (test) on win32 (Vista).

Tex, latex, luatex, and lualatex seem to run without problems, but when I tried xetex or xelatex, I got a problem with xetex.pool. I am running from the same portable hard disk, which I connect via USB first to my linux box, where
Xelatex wuns without problems (see below).

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

> xelatex
This is XeTeX, Version 3.1415926-2.2-0.9997.4 (TeX Live 2010)
 restricted \write18 enabled.
**\relax
entering extended mode
LaTeX2e <2009/09/24>
Babel <v3.8l> and hyphenation patterns for english, dumylang, nohyphenation, ge
rman-x-2009-06-19, ngerman-x-2009-06-19, ancientgreek, ibycus, arabic, armenian
, basque, bulgarian, catalan, pinyin, coptic, croatian, czech, danish, dutch, u
kenglish, usenglishmax, esperanto, estonian, farsi, finnish, french, galician,
german, ngerman, swissgerman, monogreek, greek, hungarian, icelandic, assamese,
 bengali, gujarati, hindi, kannada, malayalam, marathi, oriya, panjabi, tamil,
telugu, indonesian, interlingua, irish, italian, kurmanji, lao, latin, latvian,
 lithuanian, mongolian, mongolianlmc, bokmal, nynorsk, polish, portuguese, roma
nian, russian, sanskrit, serbian, slovak, slovenian, spanish, swedish, turkish,
 turkmen, ukrainian, uppersorbian, welsh, loaded.

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

When I connect the same hard disk to my windows portable, then I get the following behavior with
Xetex and xelatex (tex, latex, luatex, and lualatex do not show that problem).

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

C:\Users\goossens>xetex
This is XeTeX, Version 3.1415926-2.2-0.9997.4 (Web2C 2010)
 restricted \write18 enabled.
**\relax
---! e:/texlive/2010/texmf-var/web2c/xetex/xetex.fmt doesn't match xetex.pool
(Fatal format file error; I'm stymied)

C:\Users\goossens>xelatex
This is XeTeX, Version 3.1415926-2.2-0.9997.4 (Web2C 2010)
 restricted \write18 enabled.
**\relax
---! e:/texlive/2010/texmf-var/web2c/xetex/xelatex.fmt doesn't match xetex.pool
(Fatal format file error; I'm stymied)

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Is that a problem on my system (I get it both on the DOS and the Cygwin command line), and, if yes, how can I fix it?
Thanks for your help.

Michel Goossens/CERN