[R-sig-ME] glmer: Downdated X'X is not positive definite

[Ross Boylan]

On 2/24/2013 6:20 PM, Ben Bolker wrote:
> Ross Boylan <ross at ...> writes:
>
>   [snip]
>
>> Ben Bolker wrote
>>> It is indeed a little surprising (to me) that you're getting
>>> downdating problems with an intercept-only model.
>>>     Hard to say without a closer look at the data.
>>>     I know it won't solve your problem, but does fitting the model
>>> _without_ the singleton clusters work?
>    I didn't mean without the clusters, I meant dropping the singleton
> clusters from the data ...
>
Oops.  Good question.  No, it didn't help.  I had trouble getting the 
development version, detailed in a separate message.
Ross