I had a few full day session lately and crashed X2a a few times while the audio is running and I'm doing these. I must say, it happens once a while, not all the time :
- saving project
- opening effects
- changing soft synth patches. I'll loop a section to preview different presets.
- pressing the space bar (start/stop) fast or repeated record/undo (ctrl-z) key press. This action, mostly caused Sonar to locks up - you can see the now time moving forward, but it can't be stopped.
Normally I would stop the audio before doing these, but since X2 is capable while the audio is running, I just did it without thinking to press stop.