In the downloadable file lawyer-v1.3.11.zip there is another zip file called quickstart.zip.
This quickstart.zip has a CRC error while extracting this file.
Can this be fixed please

Hello,
there is no CRC error in the zip file.
Anyway its not needed to unzip this quickstart.zip.
Just download this zip file to your server and use kickstart.php to unzip

Supplementary:

www.joomlaplates.com/template-installati...rt-installation.html

Error still exist - see this logfile - 215 CRC errors in quickstart.zip

Quickstart.zip is for the server and use it with kickstart.php.
Not needed to unpack the files to your local system.
..
Or try this tool
www.7-zip.org/

Or in Linux
If the unzip command isn't already installed on your system, then run:
^{sudo apt-get install unzip}
After installing the unzip utility, if you want to extract to a particular destination folder, you can use:
_{unzip file.zip -d destination_folder}