FSX Error Message

Hi Guys,I wonder if anybody can help me? I'm keep getting this error message and have looked with trying goggle and Microsoft but haven't been able to find out what to do.What I find happens is I'll close down FSX by selecting end flight which brings me back to the main FSX screen then I click the Red X and then just get a Microsoft flight simulator has stopped working, it's something to do with an application error, but I can't find anything on this and how to correct it.I have a registered version of FSUIPC but haven't configured that, And I have the PMDG 747 , CLS Aircraft , Embraer 135/145/170/190 Aircraft , Aerosoft Scenery. I make sure I run FSX as Adminstrator aswell as when using ASE , FSBuild. I hope all the information provided is correct, I have enclosed my pc specs and the event log.Many ThanksJason My Computer Specifications:W7 Home Edition x64 bitIntel Core 2 Duo CPU E7500@ 293 GHzRAM 4GBNividia GEForce GTS 250- <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">- <System> <Provider Name="Application Error" /> <EventID Qualifiers="0">1000</EventID> <Level>2</Level> <Task>100</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2010-12-10T12:03:25.000000000Z" /> <EventRecordID>4841</EventRecordID> <Channel>Application</Channel> <Computer>XXXXXXX</Computer> <Security /> </System>- <EventData> <Data>fsx.exe</Data> <Data>10.0.61472.0</Data> <Data>475e17d3</Data> <Data>unknown</Data> <Data>0.0.0.0</Data> <Data>00000000</Data> <Data>c0000005</Data> <Data>04246c81</Data> <Data>3e8</Data> <Data>01cb98621f237e81</Data> <Data>C:\Program Files (x86)\Microsoft Games\Microsoft Flight Simulator X\fsx.exe</Data> <Data>unknown</Data> <Data>7d5e2522-0455-11e0-b883-e0cb4eba71c8</Data> </EventData> </Event>