When trying to print with the Device Manager Check and Recalibrate..., the following error message appears:
"This Device has been locked by another user. It must be unlocked before it can be checked and recalibrated as the Device Manager folder is locked".
To solve this problem, do the following:
Color Engine Pilot 12.0.1
It's also possible that one of the subfolders just shows an icon that it's locked. Giving total access to 'Everybody' on this subfolder (typically 000, 001, 002, ... ) solved the problem in my case.