Here is another logs show the error.
********* FSUIPC4, Version 4.957b (26th September 2016) by Pete Dowson *********
Windows version reported as 6.2.?.9200
fsx.exe version = 10.0.62615.0
Reading options from "D:\Program Files (x86)\Steam\steamapps\common\FSX\Modules\FSUIPC4.ini"
Running inside FSX Steam Edition on Windows 8.0 or later
Module base=535B0000
User Name="*****"
User Addr="*****"
FSUIPC4 Key is provided
WIDEFS7 not user registered, or expired
63 System time = 05/11/2016 10:05:59
63 FLT path = "C:\Users\Billy\Documents\Flight Simulator X Files\"
79 ------ Module Version Check ------
79 acontain.dll: 10.0.62615.0
94 api.dll: 10.0.62615.0
94 controls.dll: 10.0.62615.0
110 fs-traffic.dll: 10.0.62615.0
110 G3D.dll: 10.0.62615.0
110 language.dll: 10.0.62615.0
110 sim1.dll: 10.0.62615.0
125 visualfx.dll: 10.0.62615.0
125 weather.dll: 10.0.62615.0
125 window.dll: 10.0.62615.0
125 ----------------------------------
563 Trying to connect to SimConnect Steam ...
641 FS path = "D:\Program Files (x86)\Steam\steamapps\common\FSX\"
813 ---------------------- Joystick Device Scan -----------------------
813 Product= Saitek X52 Flight Control System
813 Manufacturer= Saitek
813 Vendor=06A3, Product=075C (Version 1.16)
813 Serial Number= Saitek
813 -------------------------------------------------------------------
875 LogOptions=00000000 00000001
875 -------------------------------------------------------------------
875 ------ Setting the hooks and direct calls into the simulator ------
875 --- CONTROLS timer memory location obtained ok
875 --- SIM1 Frictions access gained
891 --- FS Controls Table located ok
891 --- Installed Mouse Macro hooks ok.
891 --- Wind smoothing fix is fully installed
891 --- SimConnect intercept for texts and menus option is off
891 --- All links checked okay
891 -------------------------------------------------------------------
891 SimConnect_Open succeeded: waiting to check version okay
891 Trying to use SimConnect Steam
891 Opened separate AI Traffic client okay
6938 Running in "Microsoft Flight Simulator X", Version: 10.0.62615.0 (SimConnect: 10.0.62615.0)
6938 Initialising SimConnect data requests now
6938 FSUIPC Menu entry added
6969 c:\users\billy\documents\flight simulator x files\TEst.FLT
6969 D:\Program Files (x86)\Steam\steamapps\common\FSX\SimObjects\Airplanes\POSKY Boeing 777-200 FSX\Boeing 777-200-PW4074.air
16907 Weather Mode now = Theme
27313 Weather Mode now = Real World
277313 Weather Mode now = Custom
357829 C:\Users\Billy\Documents\Flight Simulator X Files\IFR Hong Kong Intl to Chiang Kai Shek Intl.PLN
487860 Aircraft="Boeing 777-200-PW4074 Project Opensky JAS Rainbow Seven YU JA007D"
487860 System time = 05/11/2016 10:14:07, Simulator time = 07:55:00 (00:55Z)
495829 Starting everything now ...
496500 Advanced Weather Interface Enabled
1680047 **** Restarting traffic scanning due to non-reception ****
6877797 Sim stopped: average frame rate for last 6386 secs = 22.6 fps
6877797 Max AI traffic was 114 aircraft
7681797 Sim stopped: average frame rate for last 801 secs = 12.5 fps
7681797 Max AI traffic was 31 aircraft
7691735 C:\Users\Billy\Documents\Flight Simulator X Files\IFR Hong Kong Intl to Chiang Kai Shek Intl.PLN
7691735 C:\Users\Billy\AppData\Roaming\Microsoft\FSX\Previous flight.FLT
7704500 System time = 05/11/2016 12:14:24, Simulator time = 10:53:54 (02:53Z)
7704500 *** FSUIPC log file being closed
Minimum frame rate was 6.9 fps, Maximum was 30.0 fps
Minimum available memory recorded was 1604Mb
Average frame rate for running time of 7188 secs = 21.4 fps
Maximum AI traffic for session was 114 aircraft
Memory managed: 6442 Allocs, 6442 Freed
********* FSUIPC Log file closed ***********