I would like to thank you and Kiya for all your help. I finally got the boxes moved and completed the quest. I think the problem is the left button on my trackball. It is a USB connection like my printer and in the past I sometimes have a problem with good quick connection. I'm not impressed with the USB ports. At times, after printing I get a message of losing contact with printer.

I had to keep quickly and with hard pressure keep pushing on the left button until finally I made a contact that would allow me to lift the box and move it.

Again, thanks