I developed a new version of this site locally on a Mac OS 11.7.2 and created a back up file.
I then deleted all the files from the live site, and uploaded the .jpa file and kickstart 7.1.2
When I started the the kickstart process all the files appear to have been extracted but when I started the actual installation at step six the result was a blank white page.
I repeated the process with a new backup file and got the same result.
Have you any idea where I'm going wrong?