[R] warning message

Hi, I am using the glmmPQL package, and when I run the program I got the following warning messages: 1: non-integer #successes in a binomial glm! in: eval(expr, envir, enclos) 2: Singular precision matrix in level -1, block 5 What do thy mean? Thanks ___

[R] glmmPQL and REML

Hi, I am trying to use glmmPQL package for Generalized linear mixed models. This package works by repeated calls to lme. lme uses by default REML method for estimation. Then, does glmmmPQL use REML too? In contrast, how can I change it? I have tried it, writing : method="REML", but the progr