st: OUTREG2 marginal effect from biprobit???

["Nirina F" <fstata@gmail.com>]

Hello all,
I would like to ask you 2 questions:

1- what is meant by the following message when running BIPROBIT:

warning: predict() expression  unsuitable for standard-error calculation;
option nose imposed

Marginal effects after biprobit
     y  = Pr(vart,varotc=1) (predict)
        =  .05270474

2- How do I outreg marginal effects, significance and the s.e of
marginal effects from biprobit?
Thanks so much in advance for your response,
Nirina
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