the error message says that you are trying to create an entry with a name that exists already. A folder in the content repository is similar to a directory in a file system. The names in this folder are unique. It seems as if you have already an entry "home" in the folder that ETP uses, and you are trying to create another page with the same name. ETP should certainly provide a friendlier error message.
i am not using ETP, so there might be an error in the package as well leading to this error message.