This combination was operating satisfactorily until I tried updating 
lme4 and Matrix.  My attempts to do this ultimately broke R.  The R 
console appears briefly, then collapses.   I have tried downloading and 
reinstalling R without success.  Typing 'R' into Terminal gives the 
error message bring up the usual introduction, then the error message:
Error in methods:::mlistMetaName(mi, ns) :
         The methods object name for "coerce" must include the name of
the package that contains the generic function, but there is no generic 
function of this name
Fatal error: unable to restore saved data in .RData
Can anyone help?
Greg
It did not `break R': just rename your .RData which appears to have become corrupted. Please always start R with --vanilla before concluding it is broken. On Mon, 18 Apr 2005, Greg Arnold wrote:> This combination was operating satisfactorily until I tried updating lme4 and > Matrix. My attempts to do this ultimately broke R. The R console appears > briefly, then collapses. I have tried downloading and reinstalling R > without success. Typing 'R' into Terminal gives the error message bring up > the usual introduction, then the error message: > Error in methods:::mlistMetaName(mi, ns) : > The methods object name for "coerce" must include the name of the > package that contains the generic function, but there is no generic function > of this name > Fatal error: unable to restore saved data in .RData-- Brian D. Ripley, ripley at stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595
I have the same problem, in Windows, and I think
the .Rdata is not corrupted. Load R without loading
the.Rdata file - move or rename it. Then library(lme4)
and load the .Rdata - it should work.
    cheers,
          Horacio
----------
Horacio Montenegro
PhD Student in Genetics and Molecular Biology
Universidade Estadual de Campinas (Unicamp)
phone: +55 19 3788 1151
--- Prof Brian Ripley <ripley at stats.ox.ac.uk>
wrote:> It did not `break R': just rename your .RData which
> appears to have become 
> corrupted.
> 
> Please always start R with --vanilla before
> concluding it is broken.
> 
> On Mon, 18 Apr 2005, Greg Arnold wrote:
> 
> > This combination was operating satisfactorily
> until I tried updating lme4 and 
> > Matrix.  My attempts to do this ultimately broke
> R.  The R console appears 
> > briefly, then collapses.   I have tried
> downloading and reinstalling R 
> > without success.  Typing 'R' into Terminal gives
> the error message bring up 
> > the usual introduction, then the error message:
> > Error in methods:::mlistMetaName(mi, ns) :
> >        The methods object name for "coerce" must
> include the name of the 
> > package that contains the generic function, but
> there is no generic function 
> > of this name
> > Fatal error: unable to restore saved data in
> .RData
> 
> -- 
> Brian D. Ripley,                 
> ripley at stats.ox.ac.uk
> Professor of Applied Statistics, 
> http://www.stats.ox.ac.uk/~ripley/
> University of Oxford,             Tel:  +44 1865
> 272861 (self)
> 1 South Parks Road,                     +44 1865
> 272866 (PA)
> Oxford OX1 3TG, UK                Fax:  +44 1865
> 272595
> 
>