After installing and running PrecipitFX en Immersive Installer, no contrails around flying aircraft are visible. I checked on website Orbx Central under My Products/PrecipitFX/Verify Files and then the error message "VFR central: an error occurred (WMI)" appears. I did some troubleshooting rebuilding the WMI database in Windows 10 (c:\Windows\system32\wbem\repository: deleted its contents and reboot computer to force recreation of these files necessary for the WMI services) but the error message persists. I've run some integrity checks on the Windows system which did not find any errors. Please help.
