If you run xtserial and get an error like version 8.0 not supported , you may need to update your Stata executable or the xtserial package to the latest version via ssc install xtserial, replace .
The specific identifier for this package is st0039 . Run: net install st0039 Use code with caution. xtserial stata install
: Testing for serial correlation in linear panel-data models Author : David M. Drukker Publication : The Stata Journal , Volume 3, Number 2 (2003) If you run xtserial and get an error like version 8