Hi, I would like to try using the profile() function etc. to look at confidence intervals on mixed model parameters (as detailed in Douglas Bate's online book).  Working through the book's example I get the following error message:


Error in UseMethod("profile") : 
  no applicable method for 'profile' applied to an object of class "mer"

 
I believe I have to install lme4a in order to use these new functions.  I can't seem to find any mention of this new version of lme4 on R-forge.  Does anyone know where I can obtain lme4a and if it's ready/reliable for use?

Many thanks,

Rachel
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