When running Windows 7, there is a popular CRASH FIX for FSX that involes putting the "Vista 32" UIautomationcore.dll into the FSX root directory, so that FSX uses this dll, as opposed to the one in the Windows 7 (64 bit) 'systems32' folder.

One might expect that this may also be applicable to P3D ?

What are Lockheeds thoughts on this, and recommendations ?

Have they identified if this issue has carried over from FSX ( / ESP ? ), and corrected it in P3D, or is the potential still there for this mechanizm to crash P3D under Windows 7, if using the default Windows 7 version of this dll. ?

Typically, in the FSX case, FSX needs to run for some time before the crash takes place, although it seems to occur sooner , when there is a lot of Menu Activity.

Hey Geoff,

We don't want users to copy and paste other DLLs from other operating systems other than their own.

We were aware of, and have done a lot of work to resolve crashes/leaks in the legacy menu system and the legacy user interface under all of the operating systems, especially vista and 7.

If users are experiencing repeatable crashes, then the story is still the same, we want folks to give us as much details as possible to reproduce the crash so that we can hunt it down and resolve it without having to resort to copying unsupported DLLs etc.

I appreciate that previous products were end of life and no longer supported, so creative DLL copying and other tricks were needed to resolve crashes and issues, but if we can reproduce the issue, and it is a broad issue, we'll do our best to debug it and resolve it to keep the core platform as stable as possible.

Quote from Canuck on May 23, 2012, 13:08
I ran a search and found I have several UIautomationcore.dll files just on the C drive alone. They are all differing sizes too.
C:\Windows\winsxs\amd64_microsoft-windows-uiautomationcore_ - 734Kb
C:\Windows\SysWOW64\en-US - 72Kb
c:\Windows\system - 734Kb
c:\Windows - 734Kb
C:\Windows\SysWOW64 - 549Kb
Then there are a bunch with a mui extension too "UIAutomationCore.dll.mui"
So I'm confused. How to know which is the correct one to put in the P3D folder?

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Easy Answer. NONE OF THEM .. ( see BWARD's Response)

Are the menus.dll errors similliar to the UIautomation.dll FSX menu errors in any fashion?

been having terrain.dll crashes quite frequently, in fact it's got past the stage of being annoying, I like to fly around 1,500 miles at a stretch with a couple of refuels and getting to within 50 miles and getting the terrain.dll crashes has realy put me off prepar3d, the Ulautomationcore.dll you mentioned doesnt seem to have rectified the problem, i've just tried a short flight from Dublin to Glasgow that crashed both times, this is the most recent crash report
Description
Faulting Application Path: C:\Program Files (x86)\Lockheed Martin\Prepar3D\Prepar3D.exe

Problem signature
Problem Event Name: APPCRASH
Application Name: Prepar3D.exe
Application Version: 1.3.3708.0
Application Timestamp: 4f516cc9
Fault Module Name: terrain.dll
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 4f516d39
Exception Code: c0000005
Exception Offset: 000bc0fe
OS Version: 6.1.7601.2.1.0.768.3
Locale ID: 2057
Additional Information 1: 0a9e
Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
Additional Information 3: 0a9e
Additional Information 4: 0a9e372d3b4ad19135b953a78882e789

Extra information about the problem
Bucket ID: 2910325455

would appreciate getting it sorted guys

Check if the Dublin to Glasgow scenery is from Aerosoft.

Yes, FSX runs very well, with UIAutomationcore.dll removed from the PC.

FSX tries very hard to find it, and load it, but eventually gives up, and seems to run quite well without it.
It's almost like the dll should be called appendix.dll !!

So, does the dll really do something necessary in P3D, or in P3D, is it also an "appendix". ?

What "NECESSARY" function does it perform in P3D, if any. ??