Alexander Tsai <[email protected]> stated he was having trouble with 
-estimates table-, to which I responded:
> There are three possibilities here.
> 1.  The -yr93- variable was dropped from all the models upon estimation, in
> which case the above is the expected behavior since variable -yr93-, which
> is being explicitly "kept" doesn't exist in any of the models.
> 2.  The -yr93- variable was dropped from some, but not all, of the models,
> in which case Alexander is encountering a known bug in the -estimates-
> command.  -estimates table- should display an empty cell for -yr93- for
> those models where -yr93- was dropped and display information for models
> where -yr93- was not dropped.  Instead, -estimates table- erroneously
> complains.
>     A fix for this bug will be made in a future ado update.
> 3.  -yr93- was not dropped from any of the models, in which case Alexander
> has possibly found a new bug.  Alexander can email me with his data and log
> file and I will look into it further.
After looking at Alex's data, it turned out to be number 3. and a bug in
-estimates table-'s keep() option when used with variables from named
equations.
We've fixed the bug and will include it next ado update.
--Bobby
[email protected]
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