st: my ivprobit, outreg problem and lnsigma and athrho

[Marcello Pagano <pagano@hsph.harvard.edu>]

Hello list,

1- I am running ivreg and it works fine but I would like to run ivprobit 
(as I have binary choice for my dependant variable) and it gives me 
following error. initial vector: matrix must be dimension 126 r(503).

I don't know what to do to correct it:

2- When I outreg my estimation results , it outregs only the estimation 
of the previous regression not the latest. what have I done wrong?

3- can somebody explain me the interpretation of the lnsigma and athrho 
please?

Thanks a lot in advance.
Nirina
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