What does this error in the stack mean?

General
1

Part of my debug log in unhandled exceptions has been showing this

Any idea what it is up to at the time and how I can avoid it?
ReallySendEvent??

2

Are you working with a toolbar by chance? I saw the same thing when I was sorting out a toolbar issue.

3

Not here.
This app uses Killertoolbar

4

[quote=364942:@Jeff Tullin]Part of my debug log in unhandled exceptions has been showing this

Any idea what it is up to at the time and how I can avoid it?
ReallySendEvent??[/quote]

These are just functions internal to the OS and to the Xojo framework that relate to how input events get routed to your code.