连老师，你好！
   我使用这两个命令（xtivreg2 和xtoverid）都出现“this is version 10.0 of Stata; it cannot run version 10.1 programs
     A free update to version 10.1 is available; type update and follow the instructions, or visit http://www.stata.com/support/updates.  If you are not
     connected to the Internet, you can contact StataCorp to obtain the latest version.
Error - must have ivreg2/ivreg28/ivreg29 version 2.1.15 or greater installed”

    我已经安装了，并且ssc install xtivreg2时出现
“checking xtivreg2 consistency and verifying not already installed...
all files already exist and are up to date.”
我用findit重新下载安装也不行。
                                                                           谢谢！