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  • lclogitml - equation not found

    Dear all,

    I have a problem with lclogitml after lclogit. I already ran the following commands a couple of days ago and everything worked fine:

    lclogit choice price $varlist1 if Experiment == 1, id(respID) gr(case) ncl(3) seed(123456789) membership($varlist2) constraints(Class1 2: Class2 4: Class 3)
    lclogitml if Experiment == 1, level(90) trace

    Now, I get this error message:

    could not calculate numerical derivatives
    flat or discontinuous region encountered
    method d0 may not support iterate(0)
    (error occurred in ML computation)
    (use trace option and check correctness of initial model)
    equation p2_1 not found

    Can somebody help me? What is the problem here? I already used the trace option and the initial model definitely includes equations p2_1 and p2_2...

    Another thing: Does anyone know how I can change the reference class for the class membership estimates?

    Thanks a lot!
    Claudia
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