Recently I am working on the paper of Ehrmann et al. (2011). For replication I need to run their do-file which you can find in the supporting information on the following website.
But when I opened the do-file in the stata, I found that I could not run the file and got errors like: command new is unrecognized, command library is unrecognized...
So I really want to know why this file does not run and how I can deal with it. I really appreciate your help.

https://onlinelibrary.wiley.com/doi/....1002/jae.1173