actually upon dismissing the dialog i can see that if i just scroll the mouse wheel in an empty Blink interface, i get that segfault, but it does not seem to harm the pixinsight app.
edit: something must have messed up blink, maybe the click and scroll at the same time, because loading an image into blink then locked up the blink UI and if i close and open it again, PI just says "unknown exception"
rob