xtabond2 mata eror

[oznur ucar]

Hello,
In the panel data analysis, I used Arellano and Bover / Blundell and Bond's two-step system generalized moment estimator, but I got an error like this. what can i do? thank you Favoring space over speed. To switch, type or click on mata: mata set matafavor speed, perm.
nonconstant invalid.r(198);

thank you

[Sebastian Kripfganz]

nonconstant invalid
r(198);

That is not a Mata error but a Stata syntax error. The correct name of the option is noconstant. Are you sure that you want to use this option? I can hardly imagine a situation where this is useful. To estimate the model with the diff-GMM estimator, specify nolevel instead. Also make sure that you update xtabond2 to the most recent version to avoid a few bugs/problems that had been present in earlier versions.

[oznur ucar]

Dear Kripfganz, Thank you