I ran into the same issue just now on 15.10 trying to drag <300 text files (<2MB) into a folder. I just received the "preparing ..." pop-up. When I hit cancel after several minutes, a small portion of the files had transfer.
I ran into the same issue just now on 15.10 trying to drag <300 text files (<2MB) into a folder. I just received the "preparing ..." pop-up. When I hit cancel after several minutes, a small portion of the files had transfer.