Hi Todd, I cannot replicate the problem on demand, it happens randomly. Yesterday in a class of 15 one student had the same problem. My AE version is CS6 but the class lab had CS 5.5
Only one layer on the timeline (the audio layer), and then Keyframe Assistant/Convert Audio to Keyframes. That’s it. Size of audio track makes no difference. 10 sec or a minute. RAM is also sufficient (16 GB) and no other applications open.
The previous responder might be right, since I tried that in class, waited a couple of minutes and when clicked the keyframed null layer stayed on. In my case I had to delete the Preferences (which sucked because it was fully customized) because it would simply not stay on, as soon as I clicked anywhere the track was gone.
If it happens again I’ll take a screen shot but I am afraid there is nothing unusual to see except a single layer.
thanks