Installer for 20.04 multiple problems

[Menno]

Error installing linux-image-5-4.0-28-generic
Installed linux-image-5.40.0-28-generic package post-installation script subprocess returned error exit status 1

And on another attempt:

Error removing initramfs-tools
Installed initramfs-tools package post-installation script subprocess returned error exit status 1

And also hit a bug dating back to 2011(!) where the installer hangs if you don't format some partitions.

Been busy trying to install for hours.
Once left Kubuntu for Mint just because of the shoddy QA of Kubuntu.
With Mint no longer making a KDE version, decided to try and see if Kunbuntu has its act together by now. Pretty disappointed.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubiquity 20.04.15 [modified: lib/partman/automatically_partition/question]
ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
Uname: Linux 5.4.0-26-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.445
CurrentDesktop: KDE
Date: Sun May 3 11:01:36 2020
InstallCmdLine: noprompt cdrom-detect/try-usb=true persistent file=/cdrom/preseed/kubuntu.seed maybe-ubiquity initrd=/casper/initrd quiet splash --- BOOT_IMAGE=/casper/vmlinuz
LiveMediaBuild: Kubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)