P3D V4 cannot start

[Bluesky747]

I was using P3D V4, but suddenly I couldn't start it. To solve the problem, I tried uninstalling and reinstalling P3D.
The reinstallation was successful and the activation was successful.
However, when I start P3D, the attached error message appears and I cannot start it.

The error message is billow

Perpar3D requires at least one each of the following to run: an airport, a VOR, an NDB, and a waypoint. There is currently no NDBs in the dataset. Prepar3D will now exit.

[Martyson]

I was using P3D V4, but suddenly I couldn't start it. To solve the problem, I tried uninstalling and reinstalling P3D.
The reinstallation was successful and the activation was successful.
However, when I start P3D, the attached error message appears and I cannot start it.

The error message is billow

Perpar3D requires at least one each of the following to run: an airport, a VOR, an NDB, and a waypoint. There is currently no NDBs in the dataset. Prepar3D will now exit.

@ Bluesky747 ,

How did you do it?

Did you follow these steps?:
Checksum , verify it:
Downloading Problems. Confirming the MD5 Checksum (by poppet)
viewtopic.php?f=6313&t=126465

Uninstalling/Deactivating Prepar3D:
viewtopic.php?f=6322&t=125187

Downloading and Installing Prepar3D:
viewtopic.php?f=6322&t=120676

[Bluesky747]

Thank you for the helpful information.
I was able to solve my problem.

in particular
Uninstalling / Deactivating Prepar3D:
viewtopic.php? f = 6322 & t = 125187
In
* Additional information
Returning Prepar3D v4 to a default state
Was valid.

[Martyson]

Thank you for the helpful information.
I was able to solve my problem.

in particular
Uninstalling / Deactivating Prepar3D:
viewtopic.php? f = 6322 & t = 125187
In
* Additional information
Returning Prepar3D v4 to a default state
Was valid.

@ Bluesky747 ,

Glad to hear your problem is solved.