Find Out Which Of Files Path Names Were Too Long?

How can I find out which of my files path names were too long?I'm backing up my files from one external drive to another (just dragged a giant folder over and waited over a day for it to paste the entire thing), now I come to read "The file name(s) would be too long for the destination folder. You can shorten the file name and try again, or try a location with a shorter path." The destination folder saimply reads "CD2", which could literally be anything. What's the entire path?I've got Windows 7.So I'd gladly shorten whatever path(s) and try again, but how do I read entire path of which files were too long to be in which destination folder?Don't know what to do, the window is still popped up that has the option of either "Skip" or "cancel" along which a check box at the bottom that reads "do this for all current items (11 found)", I haven't clicked anything yet.