st: "covariates in dataset 2 do not match covariates in dataset1"

[Michelle L Stransky <mlu6@cisunix.unh.edu>]

Hello everyone,

I'm working with a multiply imputed dataset (so I have 5 poverty  
variables to account for missing values).  I used the -reshape long-  
command to make each imputed variable it's own case (so now, for each  
case, I have it listed 5 times each with 1 imputation of income).

I'm running a series of regressions, trying to fine tune the predictor  
variables.  The first regression runs fine but subsequent regressions  
(whether I use my .do file or copy & paste them into the command  
window) will not calculate.  I receive an error message stating that  
"covariates in dataset 2 do not match covariates in dataset1".

I checked the file and everything seemed fine; the only things that  
don't exactly match across imputations of the dataset are the poverty  
values.  In fact, I've used this exact procedure on 2 other (very  
similar) datasets with no problems.  It's only been in the last month  
that I receive this message.

What doesn't make sense to me is that the first regression command  
runs perfectly fine but subsequent commands do not (they're all in  
exactly the same form-- mim: svy: logistic dv iv1 iv2 iv3).  And if I  
close Stata and then open it and run the second regression it works.   
I've attempted to run this analysis on Stata9 Intercooled and Stata11  
SE.  It doesn't seem to matter; I receive the same error.

Do you have any recommendations or suggestions for me as to why this  
happens and/or how to fix it?

Thanks for your help.

Michelle

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