Hello everybody,
I have been trying to maximize a multivariate function using the "amoeba"
and "quasi" commands.  I found that these commands work very well on some
simpler functions but often produce "conformability error" messages on more
complicated functions.  Also, sometimes amoeba will work great for a
particular function, but then if I change the value of just one of the
parameters, it starts producing error messages (even though the functional
form stayed the same). 
 How can i fix this problem?  Is there another way to do unconstrained
maximization in Stata? Thanks a lot!
Deliana
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