Copyhandler is good! Thanks.
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.
Is a file verifier available?
Their is no verify data after copy!