Unable to copy files:
At the end of a backup, the program will announce what files were unable to be copied. There are many reasons why a file wouldn't copy. The most common causes are:
Error messages of this nature are exclusive to the Windows version of the program. 1-Click relies upon a program called ".Net" If there is a problem with this program, the 1 Click software will fail to run, and often will produce a large error message. To fix this, remove .Net using the "Add or remove programs" option in Control Panel, then reinstall it. It is available from Microsoft's website, and Windows Update.
Run time errors with the LaCie 1-Click back up
Download and install .net framework from here
I am not able to see the files that I backed up using the 1-Click software.
Old versions of the 1Click software required Windows DPI settings to be set to "Normal." If the 1 Click software appears without buttons, uninstall the software, and download the latest version from here Mac and Windows