Ahhh! First i had a g3d.dll CTD now i have a simprop.dll error and cannot even get past the opening loading scree. Here is the log.Faulting application name: fsx.exe, version: 10.0.61637.0, time stamp: 0x46fadb14Faulting module name: simprop.dll, version: 10.0.61472.0, time stamp: 0x475e180dException code: 0xc0000005Fault offset: 0x00006da7Faulting process id: 0x12b8Faulting application start time: 0x01cd0146c9cad785Faulting application path: C:\Program Files (x86)\Microsoft Games\Microsoft Flight Simulator X\fsx.exeFaulting module path: C:\Program Files (x86)\Microsoft Games\Microsoft Flight Simulator X\simprop.dllReport Id: 2a6f6ec3-6d3a-11e1-998f-e02a824b363f- <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="2012-03-13T18:27:19.000000000Z" /><EventRecordID>44172</EventRecordID><Channel>Application</Channel><Computer>ArtymHayda-HP</Computer><Security /></System>- <EventData><Data>fsx.exe</Data><Data>10.0.61637.0</Data><Data>46fadb14</Data><Data>simprop.dll</Data><Data>10.0.61472.0</Data><Data>475e180d</Data><Data>c0000005</Data><Data>00006da7</Data><Data>12b8</Data><Data>01cd0146c9cad785</Data><Data>C:\Program Files (x86)\Microsoft Games\Microsoft Flight Simulator X\fsx.exe</Data><Data>C:\Program Files (x86)\Microsoft Games\Microsoft Flight Simulator X\simprop.dll</Data><Data>2a6f6ec3-6d3a-11e1-998f-e02a824b363f</Data></EventData></Event>

Perhaps this solution from another person here on AVSIM will work for you - http://forum.avsim.net/topic/365289-simpropdll/.Best regards,Jim

I had the same thing yesterday after doing an FSX repair with FSX gold. I omitted to do a repair of the Acceleration. Perhaps just a repair of Acceleration may resolve the simprop.dll error. NO its not a propeller proplem :)

Good idea ArDee! I also noted the error message included Exception code: 0xc0000005 (Memory_Access_Violation). This means to me that there was stress placed upon his system memory when simprop.dll was being called by the application. Previously, there was a crash with the g3d.dll being at fault but the same Exception Code. So you might want to look at memory settings in the BIOS and/or overheating and/or overclocking.Best regards,Jim

This link saved me from all kind "Faulty Modules Dll" files. Majority OS corrupted files causes Dll files failure.Kb/929833 reviews all OS files and repairs.http://support.microsoft.com/kb/929833

Thank you i tried theses things with no avail. any other suggestions before a clean install. (By the way i lost my reg how can i re install without it)

By the way i lost my reg how can i re install without it

Not sure what you mean by 'reg' (registration)? If you lost the key to Windows or to FSX, you can download this freeware program - System Information for Windows - http://www.gtopala.com/ and, when you run it, it has a License section which lists all the software keys for your system. Simply copy down the key and reinstall.Best regards,Jim