Calculate replay gain does about 20 files and then barfs silently

I’ve been trying to get replay gain calculations for my library of about 1200 albums. After I start audirvana, I can calculate about 20 albums or so fine. If I try and reopen and do any more, the replay gain progress bar ‘whooshes’ through to completion in a second or 2, and nothing is calculated. If I restart audirvana, I’m back to being able to doing 20 albums or so, then none.

My setup is a mac mini running El Cap with latest 3.x audirvana (did this on all 3.x versions I’ve had) and my music files are on a shared drive from another mac. No playback issues whatsoever, just replay gain calc.