This is a complex 10-minute video which previews correctly on the Timeline.

The audio in the second half of it is a .wav file (narration) which also previews correctly.

On export, the audio of the .wav. file stop prematurely by 15 seconds.

I have deleted render files, renamed the file, and tried removing video above the .wav track, and nearby transitions. No effect 

I can't figure out why a .wav file would just stop on Export only. 

The export format is H.264 1080p.

Thanks,

Christian

Windows 10 i7 16GB Intel HD Graphics 4600 Samsung SM 2333 monitor

PS23 Ultimate