FILR 3.2, MAC OS and Safari
Authenticate to the Web interface, go to Net Folders and browse the Net Folders. Select a folder or a series of files to download, click on more and select download as zip.
It does not create a ZIP file, it only downloads the first file in the list or the first file in the folder. Log in from Windows 7 with same ID in the Web interface and it works fine. Creates the zip file and downloads to the download folder configured in the Browser.

Update: Works fine on the MAC with Chrome. It is Safari that only downloads just the first file on the list or in the folder.