st: error using lincom with stored estimationresults

[Sarah Lee <sllee@uchicago.edu>]

Hello all,

I'm having trouble successfully computing linear 
combinations of coefficients on a set of stored estimation 
results.

For instance:

. test pctile73X1993 year_1993

 ( 1)  pctile73X1993 = 0
 ( 2)  year_1993 = 0

       F(  2,   362) =    0.83
            Prob > F =    0.4365

. lincom pctile73X1993+year_1993
pctile73X1993 not found
r(111);

Any ideas why pctile73X1993 is recognized with  -test- , but 
not with -lincom-?

Thank you,
Sarah Lee
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