I am trying to use Syncback to create a ZIP file containing the contents of a set of folders and files. I want this to contain the current copies of this set of files/folders and to delete any files that no longer exist. I have set this profile up to mirror the selected files and to delete files that no longer exist on the destination.I have created a profile that works when the zip file does not exist. However when I run the profile a second time I get an error. Compression error: Cannot open this file.In this case no files have changed.I am using Syncback to mirror local file changes to an FTP site.