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Re: st: ivreg program code

From   Nick Cox <>
Subject   Re: st: ivreg program code
Date   Mon, 6 Feb 2012 11:59:37 +0000

You are trying to use -ivreg2- (SSC) and -ranktest- (SSC). Please
remember to explain where user-written commands you refer to come
from. Also the heading -ivreg- is misleading as -ivreg- is a quite
different command.

Your problem is one with the associated Mata code. Please check that
you downloaded the latest version of the Mata library required. --ssc
desc ivreg2- and -ssc desc ranktest- show that you need to install
livreg2.mlib. Sometimes closing and restarting Stata fixes small
problems like this.


On Mon, Feb 6, 2012 at 11:49 AM, Michael Ndlovu
<> wrote:
> I am having a problem with the both the ivreg2 and the ranktest stata program code. I am currently using stata 12.0 and the problem is that when I run the code on from a do file stata gives me a r(3000) error message and informs me that "struct ms_vcvorthog undefined", under the subheading "LIML" of the code.
> I would appreciate thoughts on what could be causing this problem and suggestions on how one could go about resolving it?

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