P3D v3.4 Randomly not loading modules (FSUIPC.dll, PMDG dlls, EZCA, ...)

Hello guys,

P3D is just not loading any of the modules from either dll.xml or exe.xml. PMDG and FSL Cockpits are inop without any gauges, I cannot open FSUIPC, EZCA is not working, GSX and Couatl are not working and half of the entries in the Add-Ons-Menu are missing. It is coming up randomly. Sometimes P3D loads everything well on the first try, sometimes it doesn't even after the 10th attempt. I suspect that it has to do with installing FSX:SE in parallel to P3D a couple of weeks ago but I don't have any solid evidence on this. FSX:SE is uninstalled now with any traces removed (incl. registry).

On top of that, I am still getting a ntdll.dll crash on exit of P3D (right at the end when unloading from memory).

Prepar3D v3.4.9 on Windows 10, Client and Content v3.4.9, everything else v3.0

Add-Ons: Ultimate Realism Shader Mod v0.9 (PTA-Tool & ReShade), Estonian Migration Tool, AS16 + ASCA, REX4 TD, PMDG NGX + 777, FSL Concorde v1.36 + Concorde Performance System (CPS), A2A Stratocruiser + B-17 + Commanche, Orbx FTX Global, Vector, OLC and airports, FlyTampa, Aerosoft, IVAO IvAp.

What I already tried:

Reinstalling SimConnect (all 4), Removing old FSX:SE-Entries from the Registry, Updating P3D Content from v3.3 to 3.4, Deactivating and unistalling Sophos Anti-virus, Deactivating Windows Defender, Deactivating UAC, taking out both dll.xmls and both exe.xmls, rebuilding Prepar3D.cfg, scenery.cfg.  It still happens when I only have FSUIPC in the dll.xml and everything else default. Seems like something is interfering from outside but I cannot say what it is.

This is driving me mad...

Contents of my dll.xml No. 1:

<?xml version="1.0"?>
<SimBase.Document Type="Launch" version="1,0">
  <Descr>Launch</Descr>
  <Filename>dll.xml</Filename>
  <Disabled>false</Disabled>
  <Launch.ManualLoad>false</Launch.ManualLoad>
  <Launch.Addon>
    <Name>Migration Tool Plugin</Name>
    <Path>MigTool.dll</Path>
    <DllStartName>module_init</DllStartName>
    <DllStopName>module_deinit</DllStopName>
  </Launch.Addon>
  <Launch.Addon>
    <Name>CPS</Name>
    <Disabled>False</Disabled>
    <ManualLoad>False</ManualLoad>
    <Path>CPSModulesStart.dll</Path>
  </Launch.Addon>
  <Launch.Addon>
    <Name>CPS</Name>
    <Disabled>False</Disabled>
    <ManualLoad>False</ManualLoad>
    <Path>CPSModulesStart.dll</Path>
  </Launch.Addon>
  <Launch.Addon>
    <Name>ObjectFlow</Name>
    <Disabled>False</Disabled>
    <ManualLoad>False</ManualLoad>
    <Path>D:\Lockheed Martin\Prepar3D v3\ORBX\FTX_AU\FTXAA_ORBXLIBS\Scenery\ObjectFlow_P3D.dll</Path>
  </Launch.Addon>
  <Launch.Addon>
    <Name>PMDG HUD interface</Name>
    <Disabled>False</Disabled>
    <Path>PMDG\DLLs\PMDG_HUD_interface.dll</Path>
    <DllStartName>module_init</DllStartName>
    <DllStopName>module_deinit</DllStopName>
  </Launch.Addon>
  <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>RAASPRO</Name>
    <Disabled>False</Disabled>
    <Path>.\RAASPRO\RAASPRO.dll</Path>
    <DllStartName>module_init</DllStartName>
    <DllStopName>module_deinit</DllStopName>
  </Launch.Addon>
  <Launch.Addon>
    <Name>VistaMare Core</Name>
    <Disabled>False</Disabled>
    <ManualLoad>False</ManualLoad>
    <Path>VistaMare\ViMaCoreX.dll</Path>
  </Launch.Addon>
  <Launch.Addon>
    <Name>IvAp</Name>
    <Disabled>False</Disabled>
    <Path>D:\IVAO\IvAp v2\ivap_fsx_bootstrap.dll</Path>
    <Commandline />
  </Launch.Addon>
  <Launch.Addon>
    <Name>A2A Service</Name>
    <Disabled>False</Disabled>
    <Path>A2A\Shared\A2A_Service.dll</Path>
    <DllStartName>module_init</DllStartName>
    <DllStopName>module_deinit</DllStopName>
  </Launch.Addon>
  <Launch.Addon>
    <Name>GoFlight Module Interface</Name>
    <Disabled>False</Disabled>
    <Path>D:\GoFlight\GoFlight Interface Module.dll</Path>
  </Launch.Addon>
  <Launch.Addon>
    <Name>Air Manager</Name>
    <Disabled>False</Disabled>
    <Path>D:\Lockheed Martin\Prepar3D v3\Modules\Air Manager\AirManager.dll</Path>
  </Launch.Addon>
  <Launch.Addon>
    <Name>FSLOptions</Name>
    <Disabled>False</Disabled>
    <ManualLoad>False</ManualLoad>
    <Path>FSLabs\DLLs\FSLOptions.dll</Path>
  </Launch.Addon>
  <Launch.Addon>
    <Name>FSLEvents</Name>
    <Disabled>False</Disabled>
    <ManualLoad>False</ManualLoad>
    <Path>FSLabs\DLLs\FSLEvents.dll</Path>
  </Launch.Addon>
  <Launch.Addon>
    <Name>FSLSounds</Name>
    <Disabled>False</Disabled>
    <ManualLoad>False</ManualLoad>
    <Path>FSLabs\DLLs\FSLSounds.dll</Path>
  </Launch.Addon>
  <Launch.Addon>
    <Name>FSUIPC 4</Name>
    <Disabled>False</Disabled>
    <Path>Modules\FSUIPC4.dll</Path>
  </Launch.Addon>
  <Launch.Addon>
    <Name>FSLSpotLights</Name>
    <Disabled>False</Disabled>
    <ManualLoad>False</ManualLoad>
    <Path>FSLabs\FSLSpotLights\DLL\FSLSpotLights.dll</Path>
  </Launch.Addon>
  <Launch.Addon>
    <Name>as_connect</Name>
    <Disabled>False</Disabled>
    <Path>as_srv\as_btstrp.dll</Path>
  </Launch.Addon>
</SimBase.Document>

dll.xml No. 2:

<?xml version="1.0" encoding="windows-1252"?>
<SimBase.Document Type="AceXML" version="3,0" id="dll">
  <Descr>AceXML Document</Descr>
  <Filename>dll.xml</Filename>
  <Launch.Addon>
    <Name>SODE Animation Module</Name>
    <Path>C:\Program Files (x86)\12bPilot\SODE\SimObjectAnimationModule.dll</Path>
  </Launch.Addon>
  <Launch.Addon>
    <Name>Addon Manager</Name>
    <Disabled>False</Disabled>
    <ManualLoad>False</ManualLoad>
    <Path>bglmanx.dll</Path>
  </Launch.Addon>
</SimBase.Document>

exe.xml No. 1:

<?xml version="1.0" encoding="windows-1252"?>
<SimBase.Document Type="Launch" version="1,0">
  <Descr>Launch</Descr>
  <Filename>exe.xml</Filename>
  <Disabled>False</Disabled>
  <Launch.ManualLoad>False</Launch.ManualLoad>
  <Launch.Addon>
    <Name>as_btstrp_config_manager</Name>
    <Disabled>False</Disabled>
    <Path>as_srv\as_btstrp_config_manager.exe</Path>
  </Launch.Addon>
  <Launch.Addon>
    <Name>EZdok camera addon</Name>
    <Disabled>True</Disabled>
    <Path>C:\Program Files (x86)\EZCA\EZCA.exe</Path>
  </Launch.Addon>
  <Launch.Addon>
    <Disabled>False</Disabled>
    <ManualLoad>False</ManualLoad>
    <Name>GoFlight Hardware Interface</Name>
    <Path>D:\GoFlight\GFDevP3D.exe</Path>
  </Launch.Addon>
</SimBase.Document>

exe.xml No. 2:

<?xml version="1.0" encoding="windows-1252"?>
<SimBase.Document Type="AceXML" version="3,0" id="exe">
  <Descr>AceXML Document</Descr>
  <Filename>exe.xml</Filename>
  <Launch.Addon>
    <Name>SODE</Name>
    <Path>C:\Program Files (x86)\12bPilot\SODE\SimObjectDisplayEngine.exe</Path>
    <CommandLine>P3Dv3</CommandLine>
  </Launch.Addon>
  <Launch.Addon>
    <Name>Couatl</Name>
    <Disabled>False</Disabled>
    <ManualLoad>False</ManualLoad>
    <Path>fsdreamteam\couatl\couatl.exe</Path>
  </Launch.Addon>
</SimBase.Document>

Any help is very much appreciated... Thanks.

regards

Jan Wiese