# How to use polyglossia with biblatex?

Using polyglossia and biblatex together leads to an error:

! Package biblatex Error: Patching 'babel' package failed.

See the biblatex package documentation for explanation.
Type  H <return>  for immediate help.
...

l.4 \begin{document}

? h
This is an internal issue typically caused by a conflict
between biblatex and some other package. Modifying
?

The minimal failing example is:

\documentclass{article}
\usepackage{polyglossia}
\usepackage{biblatex}
\begin{document}
test
\end{document}

And despite the error message, reversing the order of the two packages doesn't help. I have updated files as of the last MiKTeX package update (June 3, 2013). The error occurs with both XeLaTeX and LuaLaTeX.

I'm not necessarily intending to use multiple languages in the bibliography; I just want to be able to use polyglossia for the main text of the document. How can I do this?

-
The MWE works for me if I specify a document language via \setmainlanguage{<lang>} – clemens Jun 18 '13 at 9:31