st: predict after glm

[Thomas Gschwend <Thomas.Gschwend@mzes.uni-mannheim.de>]

I tried to replicate the glm postestimation example using the 
beetle.dta closely following the code presented in the Stata9 
Reference manual A-J on page 424. I have two puzzeling observations.

1) the glm model (without the -quitely- option) prompts a warning 
message: "convergence not achieved" which does not occur when in 
addition -, irls- is specified.

2)-predict- and -mfx- yield the following error message: "Unknown function /()"

Anybody any ideas?
Thomas

...and the log is:

. use http://www.stata-press.com/data/r9/beetle

. glm r ldose, f(binomial n) l(logit)

initial:       log likelihood = -250.49593
rescale:       log likelihood = -250.49593
Iteration 0:   log likelihood = -250.49593
Iteration 1:   log likelihood = -221.91214
Iteration 2:   log likelihood = -221.87694
Iteration 3:   log likelihood = -221.87694

Generalized linear models                          No. of obs      =        24
Optimization     : ML                              Residual df     =        22
                                                   Scale parameter =         1
Deviance         =  363.6276384                    (1/df) Deviance =  16.52853
Pearson          =  372.2527216                    (1/df) Pearson  =  16.92058

Variance function: V(u) = u*(1-u/n)                [Binomial]
Link function    : g(u) = ln(u/(n-u))              [Logit]

                                                   AIC             =  18.65641
Log likelihood   = -221.8769365                    BIC             =  203.7421

------------------------------------------------------------------------------
             |                 OIM
           r |      Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
-------------+----------------------------------------------------------------
       ldose |    22.0699   1.203182    18.34   0.000     19.71171    24.42809
       _cons |   -39.7564   2.167708   -18.34   0.000    -44.00503   -35.50777
------------------------------------------------------------------------------
Warning: convergence not achieved

. predict mu_logit
Unknown function /()
r(133);

end of do-file
r(133);







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