Hi, following is easy to reproduce:
- Create an Apex App.
- Create a Shared Component, for example a Template and use umlauts in the name (e.g. "my_tämplöte")
- Make a split export of the application.
- open sqlplus on windows and run @install.sql
This problem only occurs on Windows and with sqlplus. sqlcl works if you set encoding utf8. Actually you have to delete an recreate the component, because the original id will still be used for the export filename.