Darts Scorer no longer starts

Problem
After double-clicking on the Darts Scorer icon, the Darts Scorer does not start and no window opens.
Solution
Attention: With voth possible solutions data loss (settings) is to be expected. You may need to re-enter login details etc.

Possibility Number 1
In Windows Explorer, locate the folder "C:\Users\YOUR USERNAME\AppData\Local\Robert_Mützner" and delete all files/folders.
Follow these steps. In Windows Explorer, enter in the navigation bar %LocalAppData%\Robert_Mützner (with the percents) and press Enter.
You will now see one or more folders:Delete all folders in this directory. Start Darts Scorer again.
Possibility Number 2
Open Windows Explorer and locate the installation directory (default: C:\Program Files (x86)\Robert Mützner\Darts Scorer).

Select the "Darts Scorer" directory and rename it (e.g. "Darts Scorer New").

With this variant you have to create a new shortcut. The Darts Scorer should then start normally again.