Thanks, you will need to add the scenery to the Scenery Library manually, instructions are in the manual:
1. Run FSX, FSX:SE or P3D
2. Select Settings (or, on the menu bar in P3D, “World” > “Scenery Library”)
3. Select Scenery Library
4. Click on Add Area
5. Navigate to one of these locations (your path might be different):
C:\Program Files (x86)\Microsoft Games\Microsoft Flight Simulator X\Vidan Design
C:\Program Files (x86)\Steam\steamapps\common\FSX\Vidan Design
C:\Program Files (x86)\Lockheed Martin\Prepar3D v3\Vidan Design
C:\Program Files\Lockheed Martin\Prepar3D v4\Vidan Design
6. Select (highlight) the Sindal folder
7. Click OK
8. Click OK
If you are having trouble adding the correct folder, please see this video:
https://iblueyonder.com/video-tutorial- ... windows-7/