I had some further look into this and the problem seems to be inherited from Debian, the libreoffice versions in unstable and experimental both show the same behaviour as the Ubuntu version. I forwarded the bug to the Debian bugtracker: http://bugs.debian.org/cgi- bin/bugreport.cgi?bug=670350
** Bug watch added: Debian Bug tracker #670350 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=670350 ** Also affects: libreoffice (Debian) via http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=670350 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to libreoffice in Ubuntu. https://bugs.launchpad.net/bugs/986205 Title: libreoffice-writer needs libreoffice-base for form controls Status in LibreOffice Productivity Suite: Incomplete Status in “libreoffice” package in Ubuntu: Confirmed Status in “libreoffice” package in Debian: Unknown Bug description: LO in Ubuntu 12.04 fails to open an odt document that contains a checkbox. Works fine in LO 3.4 on Ubuntu 11.10. The problem occurs only when the package libreoffice-base is *not* installed and only for the Ubuntu package, i.e. either installing libreoffice-base or using libreoffice 3.5 from http://www.libreoffice.org/download/ allows to open the file. [Test Case] * Make sure libreoffice-base is not installed. * Try to open https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/986205/+attachment/3095819/+files/test_lo_checkbox.odt --> You receive a "Read-Error." [Workaround] Install the libreoffice-base package. == Regression details == Discovered in version: 3.5.1-1ubuntu1 Last known good version: 3.4.4-0ubuntu1 ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: libreoffice (not installed) ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14 Uname: Linux 3.2.0-23-generic x86_64 ApportVersion: 2.0.1-0ubuntu5 Architecture: amd64 Date: Fri Apr 20 16:06:09 2012 EcryptfsInUse: Yes InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120307) ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=fr_FR.UTF-8 SHELL=/bin/bash SourcePackage: libreoffice UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/df-libreoffice/+bug/986205/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp