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Hi. A warning. It would appear that there was more than on bug infesting the probit function (not link)in WinBUGS1.1 because one seems to still be lurking in WinBUGS1.2beta, despite the authors' claim to have fixed the probit function. Even though the elements of my doodle specify that probit be used as a function, when you get Doodle to write the code it is specified as a link thus inverting the modeller's intention. Thus logical node x with identity link and value specified to probit(p) appears in the written code as probit(x)<-p. Not what was intended. When sampled the node returns the value specified by the written code not the doodle. Just so long as people are aware of the bug it should not be a problem. But since the function is returning the wrong value it is more dangerous than the old simple crash (did I ever think that I would yearn for those incomprehensible crashes!) Good luck to all (hey it's still a good product and still only beta) Brian. ---------------------- Brian McArdle [log in to unmask] (64)9 3737599 X5845 Fax (64)9 3737018 Department of Statistics University of Auckland Private Bag 92019 Auckland New Zealand %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%