This is XeTeXk, Version 3.141592-2.2-0.996-patch2 (Web2C 7.5.6)
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entering extended mode
(./testfile.tex
LaTeX2e <2005/12/01>
Babel <v3.8h> and hyphenation patterns for english, usenglishmax, dumylang, noh
yphenation, german, ngerman, loaded.
(/usr/share/texmf-texlive/tex/latex/koma-script/scrartcl.cls
Document Class: scrartcl 2006/07/30 v2.95b KOMA-Script document class (article)

(/usr/share/texmf-texlive/tex/latex/koma-script/scrkbase.sty
(/usr/share/texmf-texlive/tex/latex/koma-script/scrlfile.sty
Package scrlfile, 2006/03/28 v2.95 KOMA-Script package (loading files)
                  Copyright (C) Markus Kohm

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Package typearea, 2006/07/30 v2.95b KOMA-Script package (type area)
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                  Copyright (C) Markus Kohm, 1994-2002

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! LaTeX Error: File `lmodern.sty' not found.

Type X to quit or <RETURN> to proceed,
or enter new name. (Default extension: sty)

Enter file name: 
(/usr/share/texmf-texlive/tex/latex/base/fontenc.sty
(/usr/share/texmf-texlive/tex/xelatex/euenc/eu1enc.def)
(/usr/share/texmf-texlive/tex/xelatex/euenc/lm/eu1lmr.fd)kpathsea: Illegal fontname `[lmroman10-regular]': contains '['

! Font EU1/lmr/m/n/10=[lmroman10-regular] at 10.0pt not loadable: Metric (TFM) 
file or installed font not found.
<to be read again> 
                   relax 
l.100 \fontencoding\encodingdefault\selectfont
                                              
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)
fontspec.cfg loaded.
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(/usr/share/texmf-texlive/tex/xelatex/xltxtra/xltxtra.sty
(/usr/share/texmf-texlive/tex/latex/graphics/graphicx.sty
(/usr/share/texmf-texlive/tex/latex/graphics/graphics.sty
(/usr/share/texmf-texlive/tex/latex/graphics/trig.sty)
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(/usr/share/texmf-texlive/tex/xelatex/graphics/xetex.def)))
(/usr/share/texmf-texlive/tex/latex/etex/etex.sty)
(/usr/share/texmf-texlive/tex/latex/base/fixltx2e.sty))
No file testfile.aux.
[1] (./testfile.aux) )

** WARNING ** This .map file looks like a dvips format fontmap file.
** WARNING ** -- Current input buffer is: bchb8r CharterBT-Bold "TeXBase1Encoding ReEncodeFont" <8r.enc <bchb8a.pfb
** WARNING ** -- Reading fontmap file stopped at: file="pdftex.map", line=6.
Output written on testfile.pdf (1 page).
Transcript written on testfile.log.