After having certainly made a bad manipulation while moving files and folders, I can no longer empty the trash can whose contents appear with a line across.
Since upgrading to 3.7, I have what I think may be a similar phenomenon; I think
After emptying DT’s Trash, when I come to empty my system (11.3)'s Trash, I get the ‘…items in use…’ message. ‘Continue’ doesn’t empty the system Trash.
Strangely, ‘Skip’ does.
Everything I have in DT is imported - nothing at all is ever indexed.