Pathway Tools won't start after upgrading XQuartz

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We've recently discovered that new versions of XQuartz (v2.7.10+) will break Pathway Tools. If you're prompted to upgrade to a new version of XQuartz, please do NOT update. Choose "Skip" when prompted to upgrade XQuartz. Upgrading XQuartz will render Pathway Tools completely inoperable.

If you've already upgraded to XQuarz 2.7.10+, you can "revert" by following these instructions:

1) Exit out of the XQuartz application (its icon is a big "X").

2) Drag your XQuartz folder into the trash

3) Download the last known working version with Pathway Tools, version 2.7.9:

https://www.xquartz.org/releases/XQua...

NOTE: This step will require you to log out in order for changes to XQuartz to take affect.

4) Reinstall Pathway Tools

When XQuartz prompts to update, choose "skip"

Pathway Tools Support.