st: ivreg2 error message: number of clusters must be greater than number of instruments

["Albrecht Glitz" <aglitz@gmx.de>]

Dear all

I am trying to estimate an IV model with a large number of exogenous
interaction terms and one endogenous variable that I instrument. Using
ivreg2 (for the additional output it offers) I get the above error message,
however, using ivreg works fine. 

Does anyone know what to do and whether I would be doing something wrong
using the old ivreg command?

Your advice would be greatly appreciated.

With kind regards, 

Albrecht Glitz

-- 
Echte DSL-Flatrate dauerhaft f�r 0,- Euro*!
"Feel free" mit GMX DSL! http://www.gmx.net/de/go/dsl
*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/