[R-sig-ME] glmer function in lme4 - false convergence warning message

[Austin, Peter]

I am writing with a question about a warning message that I received when I used the glmer function to fit a complementary log-log binary regression model that incorporated two different sets of random effects. When running the model, I received the following warning message:

Warning message: In mer_finalize(ans) : false convergence (8).

However, output was produced, including regression coefficients, their associated standard errors, z values, and p-values. From the output, everything looked normal. How should I interpret the warning message, and what actions, if any, should I take?

Thanks very much,

Peter
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