Hardware settings not saved?

[MDVolle]

Forgive me if this is a rookie question but I truly haven't seen an answer.

When I start PT, I always get a popup window about clock.

Popup says;

"Clock Source is out of range and the peripherals have been reverted to internal clock"

In Setup/Hardware, the clock master is set to Word Clock (48k) every time I start and I just change it to Word Clock (96k) and it stays set until I close PT.

As this is a "once a day" thing to do, I've just been clicking through setup/hardware and making the change but it would be great if it would stay set.

This happens with opening a project or just opening PT.

System is an iMac Pro with a TB2 HD Native and an Omni - full specs in my profile.

Sample rate always stays set at 96k and that is my default - only the word clock setting defies me...

Word Clock is being fed from an RME interface which is clocking from the external speaker processor via AES. The RME never seems to have any issue and stays locked.

Thanks

Mark