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Strange find in Prepar3D entry in registry

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When I try to start Prepar3D I get a "fatal error" and the sim shuts down.
Found a strange entry in my registry at:
HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers


The FSUIPC4.log shows no error:


********* FSUIPC4, Version 4.961 (1st February 2017) by Pete Dowson *********
Windows 10 Pro 64 Bit reported as Build 14393, Release ID: 1607 (OS 10.0)
Prepar3D.exe version =
Reading options from "P:\Program Files (x86)\Lockheed Martin\Prepar3D v3\Modules\FSUIPC4.ini"
Running inside Prepar3D v3 on Windows 10
Module base=50210000
User Name="Rene Billiani"
User Addr="billiani@chello.at"
FSUIPC4 Key is provided
WIDEFS7 not user registered, or expired
       31 System time = 10/02/2017 09:10:36
       31 FLT path = "C:\Users\User\Documents\Prepar3D v3 Files\"
       31 ------ Module Version Check ------
       31        acontain.dll:
       31             api.dll:
       31        controls.dll:
       31      fs-traffic.dll:
       31             G3D.dll:
       31        language.dll:
       31            sim1.dll:
       31        visualfx.dll:
       31         weather.dll:
       31          window.dll:
       31 ----------------------------------
       31 Trying P:\Program Files (x86)\Lockheed Martin\Prepar3D v3\Modules\SimConnectP3D3.dll
       78 Found it: trying to connect
       94 FS path = "P:\Program Files (x86)\Lockheed Martin\Prepar3D v3\"
      453 ---------------------- Joystick Device Scan -----------------------
      453 Product= T.Flight Hotas X
      453    Manufacturer= Thrustmaster
      453    Vendor=044F, Product=B108 (Version 1.0)
      453    Serial Number=
      453 -------------------------------------------------------------------
      485 LogOptions=00000000 00000001
      485 -------------------------------------------------------------------
      485 ------ Setting the hooks and direct calls into the simulator ------
      485 --- CONTROLS timer memory location obtained ok
      485 --- SIM1 Frictions access gained
      485 --- FS Controls Table located ok
      485 --- Installed Mouse Macro hooks ok.
      485 --- Wind smoothing fix is installed
      485 --- SimConnect intercept for texts and menus option is off
      485 --- All links okay (except older global weather setting method)
      485 -------------------------------------------------------------------
      485 SimConnect_Open succeeded: waiting to check version okay
      485 Trying to use SimConnect Prepar3D
      485 Opened separate AI Traffic client okay
    58797 Running in "Lockheed Martin® Prepar3D® v3", Version: (SimConnect:
    58813 Initialising SimConnect data requests now
    58813 FSUIPC Menu entry added
    58906 C:\Users\User\Documents\Prepar3D v3 Files\LOWW_A320_F17.fxml
    58906 P:\Program Files (x86)\Lockheed Martin\Prepar3D v3\SimObjects\Airplanes\Aerosoft Airbus A320 CFM\A320.air
   133235 P:\Program Files (x86)\Lockheed Martin\Prepar3D v3\SimObjects\Airplanes\FSLabs A320 CFM\A320.air
   278422 User Aircraft ID not supplied -- trying default
   278422 User Aircraft ID 1 supplied, now being used
   280328 System time = 10/02/2017 09:15:17, Simulator time = 09:11:35 (08:11Z)
   280344 Aircraft="FSLabs A320-X Austrian Airlines OE-LBN"
   294094 Weather Mode now = Theme
   295469 Sim stopped: average frame rate for last 24 secs = 7.4 fps
   295469    Max AI traffic was 0 aircraft
   309078 Starting everything now ...
   309156 ASN active function link set
   309156 Ready for ASN WX radar
   310391 Advanced Weather Interface Enabled
  5490406 **** WARNING! Free memory is very low!
  6943110 **** WARNING! Free memory is very low!
  7917813 **** Restarting traffic scanning due to non-reception ****
 10130500 Sim stopped: average frame rate for last 9824 secs = 12.6 fps
 10130500    Max AI traffic was 13 aircraft (Deleted 0)
 10179531 === Calling SimConnect_Close ...
 10179719 === SimConnect_Close done!
 10180735 System time = 10/02/2017 12:00:17, Simulator time = 11:55:12 (10:55Z)
 10180735 *** FSUIPC log file being closed
Minimum frame rate was 5.9 fps, Maximum was 20.3 fps
Minimum available memory recorded was 195Mb
Average frame rate for running time of 9848 secs = 12.5 fps
Maximum AI traffic for session was 13 aircraft
Memory managed: 5003 Allocs, 5002 Freed
********* FSUIPC Log file closed ***********

WINDOWS Event Manager shows the following Application Error:


Name der fehlerhaften Anwendung: Prepar3D.exe, Version:, Zeitstempel: 0x5851bfd2
Name des fehlerhaften Moduls: FSUIPC4.dll, Version:, Zeitstempel: 0x58933f1b
Ausnahmecode: 0xc0000005
Fehleroffset: 0x0001f145
ID des fehlerhaften Prozesses: 0x1780
Startzeit der fehlerhaften Anwendung: 0x01d2838ed7ae8254
Pfad der fehlerhaften Anwendung: P:\Program Files (x86)\Lockheed Martin\Prepar3D v3\Prepar3D.exe
Pfad des fehlerhaften Moduls: P:\Program Files (x86)\Lockheed Martin\Prepar3D v3\Modules\FSUIPC4.dll
Berichtskennung: 3282ca42-ef82-11e6-9c4d-3085a9990a8d


When I correct the entry in the registry Prepar3D starts without a problem.
After some flights the strange registry entry shows up again.

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8 minutes ago, flightdeck1140 said:

When I correct the entry in the registry Prepar3D starts without a problem.

The FSUIPC Installer automatically deletes those entries, which are caused by a crash on exit from P3D which you may not have noticed.

This was all fixed in 4.962 which is the only currently supported version, so please update!



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