dirtrunners

I just tried the "copy the files from the CD to a folder on your hard drive and install from there" method and I keep getting a "Cannot copy 05617000: Data error (cyclic redundancy check)." error. I did try to uninstall Mapsource and then reinstall using this method. Is it possible that there's a conflict with a file that is hanging around from a previous install? Another issue? Any help greatly appreciated. Thanks!