many thx

遇到同样问题，非常感谢。很快解决了

我也是，老是提示c(showbaselevels) undefined
请问你是怎么解决的啊，是先输入update executable, force， 然后输入update swap吗？
为什么我输入第一个之后出来.
update executable, force
(contacting http://www.stata.com)

Executable update log
    1.  verifying "E:\研课程\stata\" is writeable
    2.  downloading new executable
就没反应了，然后输入什么命令都没用

到底怎么回事啊，愁死我了，望不吝赐教

我点击显示窗口中的update swap
就解决了

我也解决了，多等会就行啦，感谢回复

我也解决了，多等会就行啦，感谢回复

牛

Some users may receive the following error message when attempting to run an estimation command in Stata:

     "c(showbaselevels) undefined"
The Stata package has two components: the executable and the ado-files. One of the components is out of sync with the other because of an incomplete update. The error can be resolved by completing an update. The update commands will restart Stata, so make sure that any important information is saved before you proceed. If you have a direct Internet connection, type
     . update executable, force
     . update swap   
It is not necessary to type update swap on a Windows machine, because update executable, force does this automatically.

After the update swap is complete, type

     . update ado, force
After the update is successfully completed, your estimation command should work properly.