Fix for error when creating a map for a US/ region without border co…

[Ebe66]

…untries

And fixed three lines where a print was used without the "f'"

When trying to generate a map file for a US/ region the program would crash on Windows (and as it turned out later also on WSL) because of the "/" in the regions name.

Pull Request Checklist

• [ ] Reviewed the Contributing Guidelines
  • Especially the Pull-Requests section
• [x] Commits (and commit-messages) are understandable
• [x] Tested with macOS / Linux (tested on WSL)
• [x] Tested with Windows