[tex-live] Illegal parameter number in definition of \@preamblecmds

Zdenek Wagner zdenek.wagner at gmail.com
Sun Oct 4 11:30:09 CEST 2009

2009/10/2 Eric Faden <efaden at brynmawr.edu>:
> I just updated to Tex Live 2009 - Using Mac Pretest.... since then I am now
> getting the following error....
> "Illegal parameter number in definition of \@preamblecmds"
Something conflicts in a bad way with the LaTeX kernel. You should
make a minimum file demonstrating that problem, otherwise nobody can

> I think it has something to do with mhchem, rotfloat, float, and/or
> floatrow... not sure where to go from here?  Any ideas what this could be?
> -Eric

Zdeněk Wagner

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