It would be an odd occurrance, but did the audio track contain compressed audio? AE has always had difficulty with compressed audio.
Ah yes, AAC, in fact. Thank you, Dave, I should've caught that.
Strange that it works fine in aeCS6, though.
That's the problem with compressed audio & AE: you can never tell when it's going to give the application trouble.
Considering the tiny size of audio files, it's best to eliminate the trouble at the source and not use compressed audio at all.
Indeed! It was a client-supplied asset, but I should know by now to check for compressed audio tracks. Thanks for your input.