fsx crashes when levelD 767-300 er loads up

can anyone help me fix this issue. everytime i start levelD 767-300er fsx crashes as soon as the plane appeers at the gate you start at. i tried different planes, tried starting without rex weather, my other progs run fine like, ifly 738 and pmdg 747 heres then when i shut it down i get a net framework error. heres evrything that comes up:

Problem signature:
Problem Event Name: APPCRASH
Application Name: fsx.exe
Application Version: 10.0.61472.0
Application Timestamp: 475e17d3
Fault Module Name: StackHash_84ce
Fault Module Version: 6.1.7601.17725
Fault Module Timestamp: 4ec49b8f
Exception Code: c0000374
Exception Offset: 000ce6c3
OS Version: 6.1.7601.2.1.0.256.1
Locale ID: 1033
Additional Information 1: 84ce
Additional Information 2: 84cee309af7f1ab19921f9f10980aa55
Additional Information 3: 7822
Additional Information 4: 78222ab29989ae295d20fae004917ff5

" then when i shut down the above this is what i get"

Microsoft NET Framework

Unhandled Exception has accured in your application. If you click
Continue,the application will ignore this error and attempt to continue.
if you click quit,the application will close immediately.

Exeption from HRESULT.oxC00014B.

Details:

See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.Runtime.InteropServices.COMException (0xC000014B): Exception from HRESULT: 0xC000014B
at System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode, IntPtr errorInfo)
at Microsoft.FlightSimulator.SimConnect.SimConnect.ReceiveDispatch(SignalProcDelegate pfcnSignal)
at Microsoft.FlightSimulator.SimConnect.SimConnect.ReceiveMessage()
at rexwxengine2.controls.ucLoadAircraftLocation.DefWndProc(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ContainerControl.WndProc(Message& m)
at System.Windows.Forms.UserControl.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

************** Loaded Assemblies **************
mscorlib
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5448 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
----------------------------------------
rexwxengine2
Assembly Version: 2.5.2010.38549
Win32 Version: 2.5.2010.1027
CodeBase: file:///C:/Program%20Files%20(x86)/Real%20Environment%20Xtreme/rexwxengine2.exe
----------------------------------------
System.Windows.Forms
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5446 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5447 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
System.Drawing
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5420 (Win7SP1.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
Microsoft.FlightSimulator.SimConnect
Assembly Version: 10.0.61259.0
Win32 Version: 10.0.61637.0 (FSX-Xpack.20070926-1421)
CodeBase: file:///C:/Windows/assembly/GAC_32/Microsoft.FlightSimulator.SimConnect/10.0.61259.0__31bf3856ad364e35/Microsoft.FlightSimulator.SimConnect.dll
----------------------------------------
msvcm80
Assembly Version: 8.0.50727.6195
Win32 Version: 8.00.50727.6195
CodeBase: file:///C:/Windows/WinSxS/x86_microsoft.vc80.crt_1fc8b3b9a1e18e3b_8.0.50727.6195_none_d09154e044272b9a/msvcm80.dll
----------------------------------------
System.Xml
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5420 (Win7SP1.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
System.Configuration
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5420 (Win7SP1.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Configuration/2.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
System.Data
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5420 (Win7SP1.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_32/System.Data/2.0.0.0__b77a5c561934e089/System.Data.dll
----------------------------------------

************** JIT Debugging **************
To enable just-in-time (JIT) debugging, the .config file for this
application or computer (machine.config) must have the
jitDebugging value set in the system.windows.forms section.
The application must also be compiled with debugging
enabled.

For example:

<configuration>
<system.windows.forms jitDebugging="true" />
</configuration>

When JIT debugging is enabled, any unhandled exception
will be sent to the JIT debugger registered on the computer
rather than be handled by this dialog box.

MY INFO.

SIM : fsx sp1 & sp2
addons run with fsx: rex + Overdrive / UTX USA / UT2 / utimate traffic board 3 / CH flightsim yoke, peddals/ throttles
Antivirus : Bitdeffender set to game mode

O.S. windows7 64bit
Motherboard: ASUS P6X58D Premium
PROCESSOR: Intel Core i7-950 1366 3.07 GHz
Graphics: EVGA 01G-P3-1371-AR GeForce GTX 460
MEMORY: CORSAIR DOMINATOR 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Triple Channel
HDD: "Western Digital Caviar Black 1 TB Bulk/OEM Hard Drive 3.5 Inch, 32 MB Cache, 7200 RPM SATA II WD1001FALS"
Power Unit: CORSAIR CMPSU-750TX 750W ATX12V v2.2 SLI Certified CrossFire Ready 80 PLUS Certified Active PFC Compatible with Core i7 Power Supply
COOLING: Corsair Cooling Hydro Series H50 High Performance CPU Cooler