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st: Problems with xtmixed

From   Eduardo Nunez <>
Subject   st: Problems with xtmixed
Date   Wed, 27 Jul 2011 11:50:14 -0400

Dear Statalisters:

I haven't been able to run xtmixed.
Using the example listed in the help file this is what I get:

. webuse nlswork
(National Longitudinal Survey.  Young Women 14-26 years of age in 1968)

. xtmixed ln_w grade age c.age#c.age ttl_exp tenure c.tenure#c.tenure || id:

Performing EM optimization:

Performing gradient-based optimization:
unrecognized command:  _mkvec not defined by _mkvec.ado
unrecognized command:  _xtmixed_display not defined by _xtmixed_display.ado

I have Stata 11.2
updated to 19jul2011

I would appreciate any help!

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