installation crashed at the end of installation of language packages

[Wilhelm Lalla]

memory stick installation on an new ssd systems crashed at end of language package install

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubiquity 2.21.63.2
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CasperVersion: 1.376
Date: Wed Dec 28 20:42:24 2016
InstallCmdLine: bootkbd=de console-setup/layoutcode=de console-setup/variantcode=nodeadkeys locale=de_DE persistent noprompt cdrom-detect/try-usb=true file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz splash -- maybe-ubiquity
LiveMediaBuild: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)