ubuntu-defaults-image does not set language

[Redmar]

I've modified both i18n/language.txt and i18n/langpack.txt to include 'nl' (langcode for dutch), but after building the image the interface is still in English.
When I go to 'language settings' on the live system it shows that dutch (Nederlands) in the list, but the preferred language is English.

Setting another wallpaper does work.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: ubuntu-defaults-builder 0.23
ProcVersionSignature: Ubuntu 3.2.0-17.27-generic 3.2.6
Uname: Linux 3.2.0-17-generic x86_64
ApportVersion: 1.93-0ubuntu2
Architecture: amd64
Date: Sun Feb 26 13:41:13 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20111129.1)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=nl_NL.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-defaults-builder
UpgradeStatus: Upgraded to precise on 2012-01-17 (39 days ago)

[Redmar (redmar)]

As a work around for bug https://bugs.launchpad.net/ubuntu/+source/ubuntu-defaults-builder/+bug/910859 I copied the content of /usr/share/syslinux/themes/ubuntu-precise/ to /usr/share/syslinux/themes/ubuntu-oneiric. Could this have something to do with this problem?

[Martin Pitt (pitti)]

Yes, I strongly believe that's a duplicate, as copying the syslinux theme helps. I mark it as such.