I have tried Side Trash on two separate systems, both running very cleaning, all maintainenece done regularly and Side Trash does not work on either one?

I am sure it is on my end judging from all the positive feedback, but I am not sure what to try. I put a copy on my desktop and in my sidebar, but when I drag items to the icon, nothing happens.

Well, really what happened is that it worked on both systems the first time!, then that was it.

Any thoughts appreciated,

Henry