It's an error due to the sentinel hardware key. First step could be restart the Pc and try again. If it persist use the following instruction:
- click on the "Start" window icon (on the lower left corner) and digit "service.msc";
- click on the "Services" that should automatically appear on the menu;
- scrool down the list to find "Sentinel LDK Manager";
- select it and click on the "Start"/"Restart" button;
- it should be "Running" into the "status" column.
Then it's possible retry to run DomuS3D
This article is valid for DomuS3D® 2017 and later versions