Comment 46 for bug 194431

for a more elegant fix, (which will also allow you to use the stacks trasher)... open your /etc/fstab file:

$ gksu gedit /etc/fstab

and add the following code to the end:

/home/<username>/.local/share/Trash/files /home/<username>/.Trash none bind

don't forget to replace <username> with your actual username ;)

if you want to make it work right now! with no reboot...

$ sudo mount -a