Quit Pro Tools. Navigate to the session folder. Delete the file named [YourSessionName].ptx.wavecache (or just the .wavecache file). Reopen the session. Pro Tools will build a fresh cache from scratch.
Older fixes (like toggling buffer size) no longer work reliably. Instead, 9416 now appears when Pro Tools loses sync with Core Audio after system sleep or display wake. This was rare before 2024; now it’s a leading cause. aae error 9416 updated
The error is most frequently associated with the Elastic Audio engine failing to process audio clips in real-time. Quit Pro Tools
For a moment, it worked. The playhead moved. The meters danced. But then, as he went to trim a single clip, the grey box returned, more insistent than before. The updated error wasn't just a glitch; it was a wall. Reopen the session