Microsoft .NET Framework unhandled exception

[fsxwx]

Do the logs help at all?

Yes and no. They give a hint, but they don't reveal the culprit. Thanks anyway!

FSX has a a million reasons to crash ... ;-) And everytime the Simconnect connection is lost/crashes, it brings down FSXWX, too.

Indeed, the UIAutomationcore.dll is one reason for FSX to crash. As a matter fact, I also used an alternative version all the time.
I really hope that this is the solution for your troubles. Let me known if another crash will occur that could be related to FSXWX.