我用的是STATA16,安装命令，总是不成功，. net install xsmle, all from (http://www.econometrics.it/stata)
checking xsmle consistency and verifying not already installed...
connection timed out -- see help r(2) for troubleshooting
could not copy http://www.econometrics.it/stata/xsmle/xsmle.ado
(no action taken)
r(2);
. net install sg162.pkg
file http://www.stata.com/sg162.pkg not found
could not load sg162.pkg from http://www.stata.com/
r(601);
谁能指点下我，非常感谢！