I think there is a bug opening the application on Windows. After installation I got the message, that the local database (theocbase.sqlite) was copied to my user profiles folder (Appdata\Theocbase) and actually there it is. I can navigate to this folder and the file is present.
The problem is, that my user profile is not located on the default drive "C:\". So when I open TheocBase it trys to open C:\Users\myUser\Appdata\Theocbase\thecobase.sqlite which of course does not exist.
Is there a possibility to tell Theocbase where to look for the DB? Otherwise I suggest you check the code used for copying the database and reuse it during the opening process. :)
Thank you for your great work.