Math & Science ⇒ siunitx | Error on Startup

[jdmacq0707]

I have recently (since a Miktex auto-update in late June 2011) seen a problem in siunitx.
Minimal working example is:

Code: Select all

\documentclass{article}
\usepackage{siunitx}

\begin{document}

stuff

\end{document}

and the logged error is

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\..\Application Data\MiKTeX\2.9\tex\latex\siunitx\siunitx.sty(805): Error: Undefined control sequence.
\..\Application Data\MiKTeX\2.9\tex\latex\siunitx\siunitx.sty(805): Error: You can't use `\spacefactor' in vertical mode.
\..\Application Data\MiKTeX\2.9\tex\latex\siunitx\siunitx.sty(805): Error: Missing $ inserted.
\..\Application Data\MiKTeX\2.9\tex\latex\siunitx\siunitx.sty(805): Error: LaTeX Error: Missing \begin{document}.
\..\Application Data\MiKTeX\2.9\tex\latex\siunitx\siunitx.sty(828): Error: Missing $ inserted.

Am I the only person seeing this?

[josephwright]

What is needed here is the full log, as the version of the package loaded is what is important.

[jdmacq0707]

Thanks for your prompt reply. As far as I can tell, the problem turned out to be a corrupted MikTex installation. My MikTex Updater runs persistently failed for several days in a row a few weeks ago, and I suspect that left some packages in a corrupt state. I did a fresh install of MikTex, and the problem seems to have vanished.