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Thanks for your reply Chris. The model I'm trying to run is really the same, though the offset variable is calculated slightly differently (i.e some individuals have slightly different values) but it was logged. Another puzzling thing is that I did retrieve a previously stored worksheet with a model...

Hi I'm trying to run two-level negative binomial models. While there is no problem without offsets, when I include offsets MLwiN falls over immediately with the following error message: “error while obeying batch file C:\Program Files (x86)\MLwiNv2.22\discrete\pre at line number 65: calc ‘F~(H)’=exp...