Yes, I would like to know as well. I've looked everywhere that makes sense, but clearly I am 'challenged'. Any insight into how to delete on upload manager? --wil--
Go to UserCP. On the left side column scroll down and you will see "attachments", click on that. You will see what you have uploaded. On the right side you will see a check box on each line. Select the ones you want to delete. Scroll down and you will see the delete button on the right side. It's under and in line with the check boxes. Click it and they will be gone.