Hi…,
Welcome.
The database build software is written and supported by Carenado.
You might try disabling antivirus and right mouse run-as-adminstrator your FS.
Although referencing FSX Steam, you might like to see https://carenado.zendesk.com/hc/en-us/a … ot-Loading .
Also see Loading Data Base
Other wise I would check further the Carenado forum. It is not a Navigraph data issue.
Cheers
Ian