[R-sig-ME] Something broken in lme4 after update?

[Douglas Bates]

On Mon, Oct 27, 2008 at 10:27 AM, ONKELINX, Thierry
<Thierry.ONKELINX at inbo.be> wrote:
> A little update. lme4_0.999375-27 works fine after installing
> Matrix_0.999375-16 (CRAN) instead of Matrix_0.999375-17 (R-forge)

The issue is a bit more subtle than that.  You need to reinstall the
lme4 package after changing the version of the Matrix package.
There is a change in the internal code in the Matrix package between
-16 and -17.  The -16 version requires two versions of every function
in the CHOLMOD, AMD and COLAMD libraries whereas the -17 version is
back to only one version.  However, lme4 must be reinstalled (in
particular, the C code must be recompiled) after a change in the
Matrix package.