Included with your installer is the following patch: MV_WX_Radar_v1.yymmdd.zip (where yyddmm is the date of the latest patch version)
This is for users running Prepar3D v4.4 and higher who wish to use the included WX Advantage weather radar. Users running other sim platforms may ignore the patch.

INSTRUCTIONS:
Install your aircraft as usual (anti-virus off, insaller running with administrator privileges).

Then run the WX patch. This will patch all Milviz products on your system that include the bundled WX; so you need only run the patch once.

If you already have the latest version of your aircraft installed, you may simply install the patch with no need to install the base aircraft again.