[SOLVED] Half an audio clip is missing waveforms...

How to refresh the waveforms?

When I first brought in this ten minute mono audio dialog track, it looked fine, but as I scrolled ahead working on the project, I saw that the last half of it (I think, all that wasn't displayed on the initial placement??) HAS NO WAVEFORMS.

The audio is there - but the clip's waveforms for the back end are empty! All fine for the first seven minutes or so.

Using Resolve 12.5.6.017 on OSX 10.12.5

Is it .mp4 by any chance?

Nope, it's a standalone WAV file... 48Khz, 16 bit mono. Recorded on the same Mac

Like I say, the first three quarters of it has perfectly good waveforms - I have been editing this project fine for two days, and now I'm 'flying blind' with the last three minutes of audio. Not insurmountable, but hoping for a quick fix...

Then I'm stumped. I've seen disappearing waveforms on compressed stuff, but never .wav. It's a blind shot, try at your own risk, but I'd delete the audio cache files, so the system has to rebuild all the waveforms.

Score! I went into the Cache folder... found the Audio subfolder for that project, and deleted both files (two identical, one with _0 suffix). NOW HAVE ALL WAVEFORMS BACK

Thanks for your intuition [insert thumbs up icon here]