@tom-elliott
https://github.com/FOGProject/fogproject/compare/1.4.4...1.5.0?diff=split&name=1.5.0#files_bucket
Look at the change in the “lib/ubuntu/config.sh” file.
Why is genisoimage and issolinux package necessary?

@wayne-workman
I know this, but this is not a nice/best solution to the problem.

uname -a
Linux fogserver 4.9.0-6-amd64 #1 SMP Debian 4.9.82-1+deb9u3 (2018-03-02) x86_64 GNU/Linux

When I upgrade FOG 1.4.4 to version 1.5.0, then the genisoimage, isolinux packages whill not be installed.
Because the file (/opt/fog/.fogsettings) is exists and the variable (packages) is defined in this file, the variable will not be overwritten (/opt/fog_1.5.0/lib/ubuntu/config.sh, row: 74.)