Publisher requires at least 1 language to be present at all times, and installs with English as the default language. You can change the default language by either adding additional languages and identifying one of them as the default, or by editing English and changing its long name and short name values to another language. Changing the long and short name values are recommended if your site’s default language will not be English. During the install process all existing entries are assigned the language ID of “1”, assuming your existing entries at the time of install are in your default language, you will want to change the long and short name values of “English” to your default language name, thus keeping the language ID values properly assigned to your entries.