Copy Handler program is a small tool designed for copy/move files and folders between different storage medias. Currently it works only in Windows systems, however in the future more platforms should be supported.
Just like CopyHandler and other software that I've tried, they worked fine until recently when there were errors/crashes when I was copying large files. I had no choice but to do the process over again. I browsed several forums and tried suggestions and there was one suggestion that I highly recommend myself which is GS RichCopy 360. It is worth giving a try. Hope this helps.