
> 
> I am trying to fit a GLM model using R (version 0.64.1 Win95) onto a
> dataframe(dtse) consisting of 3348 rows with 4 variables:
> - 3 factors: (c)31 levels, (m)12 levels (s)9 levels)
> - 1 integer: (n)
> The data consists of counts and is strongly overdispersed.
> 
> I try fit the following model
> dtse.glm<- glm(n~s+c+m, data=dtse, family=quasi(link=log, variance=mu))
> 
> When I issue this command R sometimes answers, but sometimes (using the
> same dataset) simply crashes without any error message in the R-console.
> Only the standard Win95 error-dialog appears.


This may be related to the problem of model.matrix crashing that I
reported on 11 May (apparently a buffer overflow problem), although I
doubt it as your model formula is not very long.
  Jim
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