st: option logF() not allowed

[ncdcta00@uniroma2.it]

Dear statalist, I have this message  of error when I want to run a xtprobit:
tsset id wave
 xtprobit family householdincome housetype

Fitting comparison model:

Iteration 0:   log likelihood = -60829.578
Iteration 1:   log likelihood = -54736.981
Iteration 2:   log likelihood = -54678.765
Iteration 3:   log likelihood = -54678.729

Fitting full model:

option logF() not allowed
r(198);

thanks for your help

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