R help - May 2004 - GLMM question

Hi

I'm using lme4 to do random effects modelling.

I keep getting the following error message:

Error in "EMsteps<-"(*tmp*', value = control) :
            invalid source matrix

I get the error when I include more than one random effect in the model,
sometime I'm able to get two.  I've looked into the variables that cause
the problems aren't highly correlated, but they are dummy variables with
small percentages receiving a score of 1 (6%, 11%).

I've read the documentation for lme4 about EMsteps, but am not sure how to
use what it tells me.

I realize this is more a stat question than an R question, and I appologize for
that, but any thoughts or direction to find an answer will be greatly
appreciated.

Thanks

Matt
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On Wednesday 12 May 2004 16:48, Matt Loveland wrote:
> Hi
>
> I'm using lme4 to do random effects modelling.
>
> I keep getting the following error message:
>
> Error in "EMsteps<-"(*tmp*', value = control) :
>             invalid source matrix
>
> I get the error when I include more than one random effect in the
> model, sometime I'm able to get two.  I've looked into the
variables
> that cause the problems aren't highly correlated, but they are dummy
> variables with small percentages receiving a score of 1 (6%, 11%).
Could you give us a reproducible example (along with information on what 
versions of R and lme4 you are using) ?

Deepayan