unetbootin live usb install attempt failed at the last stage

[Don]

I can't give any useful information because I have no idea what is going on. None of the instructions below are even remotely understandable to me. I use computers, I do not understand them, sorry.

ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: ubiquity 18.10.12
ProcVersionSignature: Ubuntu 4.18.0-10.11-generic 4.18.12
Uname: Linux 4.18.0-10-generic x86_64
ApportVersion: 2.20.10-0ubuntu13
Architecture: amd64
CasperVersion: 1.399
CurrentDesktop: Budgie
Date: Sun Apr 7 14:35:08 2019
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu-budgie.seed boot=casper only-ubiquity quiet splash ---
LiveMediaBuild: Ubuntu-Budgie 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.2)
ProcEnviron:
 LANGUAGE=en_AU.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_AU.UTF-8
 LC_NUMERIC=C.UTF-8
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Paul White (paulw2u)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. We are sorry that we do not always have the capacity to review all reported bugs in a timely manner.

The following errors can be found in UbiquitySyslog.txt which was automatically attached to this bug report:

Apr 7 05:04:37 ubuntu-budgie kernel: [ 591.009410] SQUASHFS error: zlib decompression failed, data probably corrupt
Apr 7 05:04:37 ubuntu-budgie kernel: [ 591.009413] SQUASHFS error: squashfs_read_data failed to read block 0x24e9349b

It's possible you had a bad write to your media or for some other reason its contents could not be read. When having such problems please try the option to check the integrity of the image from the installer boot menu, and if this confirms that the media is corrupt, try re-writing and/or re-downloading it.