You know, when I click open the errant drive the Finder window that pops up is strange. I have all my drives set in 'As Columns'. This one always opens the Finder window in 'As Icons' mode.
And there is no 'Search' function on the Finder window, nor the Toolbar or Status bar at the bottom listing item number and available space.
I can reset the Finder window to 'As Columns', but when I close and open it again it's automatically gone back to 'As Icons' mode.
I just noticed I can't create a new Folder on the drive.
I pulled a copy of the Library off the drive onto my Desktop ... and it would sort-of open; it would allow me to update the file for the current FCP, but then it wouldn't allow me to relink the files (to the media on the drive). It just froze FCP.
I'm now copying everything from the drive to another drive to see if it's the drive itself that is the issue, whatever that issue might be.
???