I've just done a clean install of Windows 10 and subsuquently P3D v4.5 to sort out some issues; I am having trouble with simconnect and my iPad EFB as well as certain add-on's such as Leonardo's Maddog.

I looked at these two files and they don't contain any add on information; I am assuming this is problematic?

Here are the files, currently:

<?xml version="1.0" encoding="UTF-8"?>

<SimBase.Document Type="AceXML" version="3,0" id="dll">
    <Descr>AceXML Document</Descr>
    <Filename>dll.xml</Filename>
</SimBase.Document>

 

<?xml version="1.0" encoding="UTF-8"?>

<SimBase.Document Type="AceXML" version="3,0" id="exe">
    <Descr>AceXML Document</Descr>
    <Filename>exe.xml</Filename>
</SimBase.Document>

 

It's not a problem, if all the add-ons you use install using the suggest method of the add-on.xml, instead of the legacy dll/exe.xml method, which is there mostly for backward compatibility reasons.