\textgerman{} gives errors.

[LegolasV]

This example: \documentclass{scrartcl}

\usepackage{polyglossia}

\setdefaultlanguage{english}
\setotherlanguage{german}

\begin{document}
    \textgerman{Hallo.}
\end{document}

Results in the following error: ! Missing number, treated as zero.

\l@german l.11 \textgerman{Hallo.} ``` ? ```

[eg9]

I believe that you have a bad installation. What does the log file say initially, where all the loaded languages are displayed? Mine says

LaTeX2e <2011/06/27>
Babel <v3.8m> and hyphenation patterns for english, dumylang, nohyphenation, ge
rman-x-2011-07-01, ngerman-x-2011-07-01, afrikaans, ancientgreek, ibycus, arabi
c, armenian, basque, bulgarian, catalan, pinyin, coptic, croatian, czech, danis
h, dutch, ukenglish, usenglishmax, esperanto, estonian, ethiopic, farsi, finnis
h, french, galician, german, ngerman, swissgerman, monogreek, greek, hungarian,
 icelandic, assamese, bengali, gujarati, hindi, kannada, malayalam, marathi, or
iya, panjabi, tamil, telugu, indonesian, interlingua, irish, italian, kurmanji,
 lao, latin, latvian, lithuanian, mongolian, mongolianlmc, bokmal, nynorsk, pol
ish, portuguese, romanian, russian, sanskrit, serbian, serbianc, slovak, sloven
ian, spanish, swedish, turkish, turkmen, ukrainian, uppersorbian, welsh, loaded.

[LegolasV]

I've done a complete check of my installation, which indeed seems to fix it. Apparently something went wrong in my hyphenation patterns.

Thanks for the help.

[reutenauer]

Hi Legolas, I tried to reproduce the problem, and was unable to, so I didn't know what to say :-) Glad it's fixed for you!