AAE 2 error when importing or playing audio

This started today out of nowhere just as I sat down to work.



Was using PT HD Native 11.1.3 or thereabouts this morning. Any file that I pulled into a session will result in an AAE 2 error on import, and that error will come up any time after that the new file is selected. The session will be unusable if a problem file is in the arrange window.



I've rebooted.

Trashed prefs using PT Prefs.

Upgraded to 11.2.1.

Tried new sessions adding one file at a time.

Tested files from local and network volumes.



The result is always the same.



Any ideas on what this can be?



Thanks in advance,



Late 2013 Mac Pro running 10.9.5

PT HD Native 11.2.1

Sessions are at 96k.