Hey jvzsys,
It looks like you don’t have PHP enabled for Zipping. Your server has to be setup with “–enable-zip” for the Duplicator to zip files.
If your trying to run just the installer then you can run without Zip Support. On the installer screen you will need to check the checkbox ‘Manual Package Extraction’ and manually extract the package before running the installer.
ON HOSTED SERVERS
Just contact your hosting provider and tell them you want PHP with Zip support so that the “ZipArchive Class” will work. If they don’t know what your talking about or will not enable it then I would suggest getting a new hosting provider. This is a very common feature and is available on almost all shared hosting environments. Please view the following link for a list of certified hosting providers that work very good with the Duplicator http://lifeinthegrid.com/duplicator-certified
ON YOUR COMPUTER
If your trying to use the Duplicator on your own computer you will to make sure the Zip extensions are enabled. Check your php.ini file for the following:
On Windows: extension=php_zip.dll
On MAC and Linux: extension=zip.so
For more details see: http://www.php.net/manual/en/book.zip.php
Hope this helps!