How to Empty your Trash On Mac after receiving Other task Error
If you are receiving this error: "Trash can can't be opened right now, because it is being used by another task, such as moving a file, moving an item or emptying the trash", I can understand if you felt frustrated when you kept closing and looking for that other task that just keeps or kept eluding you.
Well, it just so happens that the solution is very simple. All you have to do to correct this problem is go over to Force Quit and relaunch Finder. Once you have done this it should allow you to empty your trash. IF for some odd reason you are unable to, visit the advanced tab under Finder preferences and make sure the "Empty Trash Securely" is unchecked.