Update: I've figured out how to reproduce this one. It consistently occurs in the scenario where I connect the USB cable and then start the software. On that first run, as soon as I click one of the G1000's hardware buttons (such as the upward arrow button under "ENGINE" on the MFD), it crashes. It only happens on the first run after the USB cable's been reconnected to the PC. On any subsequent run, it doesn't seem to crash.