: Make it a habit to use the PT Prefs 2 utility to trash your preferences every few months or after any major system update.

The is no longer the mysterious "disk error" of 2019. In the current 2026 Pro Tools ecosystem, it is a specific, fixable conflict between the Avid Audio Engine and your session’s support files (fades, wavecaches, and cloud locks).

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.

Verify that all tracks are assigned to your dedicated audio drive, not a slow backup drive or a cloud-synced folder (like OneDrive or iCloud). Step 3: Troubleshoot and Freeze Plug-ins

Surprisingly, having Cloud Collaboration enabled without an active internet connection now contributes to buffer underflow errors in 2024.12+, including 9416.

Ensure your session is running on an SSD, not a spinning HDD.

: Intermittent communication lags when Pro Tools searches for files outside of the active RAM-cached timeline timeline space.

Have an alternative fix? Share it on the Avid Community Forums. Last updated: January 2026.

Click (or use Option + Shift + 3 on Mac / Alt + Shift + 3 on Windows).

Ensure your graphics drivers are up-to-date:

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The plugin is working well and support helped me solving an issue with my website. I just gave admin user and they fixed it in a moment
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Working perfectly, great support
⭐⭐⭐⭐⭐
Ivan trp
It works by default, it’s settings are where they should be (not creating a new item at the admin menu, making it harder to find things).
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Great and clean alternative ⭐⭐⭐⭐⭐
Juanzo
Super impressed with the user interface and the fact all functionality is configured within the product editor
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Works Great in latest Woo and WP! ⭐⭐⭐⭐⭐
@chickwithbob
Works Great in latest Woo and WP!
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Works Great!
⭐⭐⭐⭐⭐
Natacha
Good plugin. Helped me, thanks
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⭐⭐⭐⭐
thywordpress
This plugin displays color swatches in the WooCommerce sidebar, allow my customers to quickly preview. Thanks a Lot
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⭐⭐⭐⭐⭐
wdsydney
Beautifys your variations, simplifys backend
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⭐⭐⭐⭐
thatLeo
Very useful plugin
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Saurabh Jain
Works flawlessly. Thanks for that
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Larzans

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