TRY THIS, \WORKED FOR ME

 

https://carenado.zendesk.com/hc/en-us/articles/360003898233-P3DV4-FMC-Navigraph-Not-loading

 

It worked for me with 

<Descr>AceXML Document</Descr>

<Filename>dll.xml</Filename>

  <Launch.Addon>

    <Name>PMDG_Interface</Name>

    <Disabled>False</Disabled>

    <Path>PMDG\DLLs\PMDG_Interface.dll</Path>

    <DllStartName>module_init</DllStartName>

    <DllStopName>module_deinit</DllStopName>

  </Launch.Addon>

<Launch.Addon>

<Name>Carenavigraph</Name>

<Disabled>False</Disabled>

<Path>.\Carenavigraph.dll</Path>

</Launch.Addon>

</SimBase.Document>

Thanks!