R help - Jul 2010 - A problem about the package "lme4" in R-2.11.1

Dear all R-users,

When I install the package "lme4" in R-2.11.1, and use it to run the
simulation on the Linux system, it appears the following problem.

Attaching package: 'lme4'
The following object(s) are masked from 'package:stats':
    AIC
Error in names(argNew)[1] <- names(formals(new))[[1]] : 
  replacement has length zero
Calls: initial ... lmerFactorList -> lapply -> FUN -> as -> asMethod
->
fac2sparse
Execution halted

However, when I use this package in R-2.11.0, it can work to run the simulation 
as I do in R-2.11.1. 


How could we fix this problem? Thank you so much.


Sincerely,


Joe


      
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>>>>> "NC" == Nai-Wei Chen <s90225007 at
yahoo.com.tw>
>>>>>     on Wed, 14 Jul 2010 05:20:09 +0800 (CST) writes:
(to both R-help and R-SIG-mixed-models; this is called 
 "cross posting" and not liked, even considered impolite.
 I'm only replying to R-help ..)

    NC> Dear all R-users, When I install the package "lme4" in
    NC> R-2.11.1, and use it to run the simulation on the Linux
    NC> system, it appears??the following??problem.

    NC> Attaching package: 'lme4' The following object(s) are
    NC> masked from 'package:stats': ?????? AIC Error in
    NC> names(argNew)[1] <- names(formals(new))[[1]] : ??
    NC> replacement has length zero Calls: initial
    NC> ... lmerFactorList -> lapply -> FUN -> as -> asMethod
->
    NC> fac2sparse Execution halted

    NC> However, when I use this package in R-2.11.0, it can
    NC> work to run the simulation as I do in R-2.11.1.

    NC> How could we fix this problem? Thank you so much.

You really need to tell a bit more of the "full story".
Does this happen when you start R from scratch?
What are the exact commands you then enter?
Please provide the result of sessionInfo(), as well.

I'm pretty sure you have some version mismatch (versions of R,
and lme4 and the Matrix package, probably).

Martin Maechler, ETH Zurich

    NC> Sincerely,
    NC> Joe