[XeTeX] xelatex.fmt missing

[Arno Trautmann]

Hi,

I hope, this is not a FAQ – but searching the web didn‘t give me an 
answer, although I found many entries for this:
The simple document

\documentclass{minimal}
\begin{document}
test
\end{document}

gives me the output:

---
[…]
(/opt/texlive/texmf-dist/tex/generic/xu-hyphen/xu-glhyph.tex
(/opt/texlive/texmf/tex/generic/hyphen/glhyph.tex
! Undefined control sequence.
l.19 \catcode`\ﻱ1 \lccode`\＠\
                                     catcode`\绱1 \lccode`\缠\牜catcode` 
\�...

?
! Emergency stop.
l.19 \catcode`\ﻱ1 \lccode`\＠\
                                     catcode`\绱1 \lccode`\缠\牜catcode` 
\�...

No pages of output.
Transcript written on xelatex.log.' instead of a filename.
I can't find the format file `xelatex.fmt'!
---

So, as I said, of course I was searching the internet for some help, but 
didn‘t find something, that helped me – I found many advices for other 
platforms, but didn‘t manage to solve it on my system.
I’m running TeXlive on Arch Linux, just updated yesterday. LaTeX works 
fine and so does XeTeX, so maybe there are problems with the 
arch-package vor TeXlive? Or can anyone give me a hint, what my mistake 
is here? Where could I find a hint, how to fix the problem?

Thanks,
Arno

p.s.: I think, the problem is the missing xelatex.fmt, but why do I get 
theese strange symbols on the terminal?