"MySettings cannot be saved."
This message will appear if you attempt to backup MySettings to a location which may not be used. This includes attempting to overwrite an existing backup which is read only or locked, attempting to write to a read only location such as a CD-ROM, using non-standard characters in the file or folder name, and so on.
"Error. Failed to restore MySettings."
This message will appear if there are non-standard characters in the backup file name or in any of the folder names leading to the backup file. Use Windows® Explorer to move and/or rename the backup file so that there are only standard characters in the file and folder names, then try again.