st: what the deal with mlogit predict?

[Kyle Hood <kyle.hood@yale.edu>]

I am trying to do predictions of scores with mlogits, and I get some 
strange errors.  Using Stata 10.  Here is an example.

. webuse sysdsn3

. mlogit insure age male nonwhite site2 site3
* results suppressed *

. predict s1 s2 s3, scores
too many variables specified
the current estimation results for mlogit have 2 equations so you must 
specify 2 new variables, or you can use the
equation() option and specify one variable at a time
r(103);

. predict s1 s2, scores
too few variables specified
insure has 3 outcomes and so you must specify 3 new variables, or
you can use the outcome() option and specify variables one at a time
r(102);

How can 3 be too many but 2 too few?  What am I missing, here?

Kyle
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