Ok, here are a couple of questions then....
I guess nothing showing on the screen, you know the green message bar? What plane was it? What speed were you travelling?
This is obviously something that has caused the flight logger to stop responding and the only thing that has ever caused this for me was flap relief on the PMDG 747, because I used to come in fast and deploy my flaps a little early to bleed off speed, the PMDG model would realize that I was too fast and retract them again, it would continue trying to deploy them until the aircraft speed was low enough for the flaps to be deployed but even though that was only a couple of seconds, it had tried deploying and retracting the flaps hundreds of times in these few seconds which would send messages to the flight logger of flap 1, flap 2, flap 1, flap 2, flap 1, flap 2 etc. Of course, i am not suggesting this is what has happened but it could be a similar phenomenon.