Solution found via French Mailing-List of LibreOffice, very easy: http://nabble.documentfoundation.org/Fatal-Error-td4160081.html#a4160111
Just suppress the existing user profile. In /home/.config rename the folder libreoffice to OLD_libreoffice Re-launch the program: it should work normally. After that it is possible to delete OLD_libreoffice. Solved ! ** Changed in: libreoffice (Ubuntu) Status: New => Fix Released -- 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/1495083 Title: Impossible to launch Libre Office 5 in Ubuntu Willy: user setup not finished Status in libreoffice package in Ubuntu: Fix Released Bug description: Hi, Since I installed a fresh Ubuntu version of alpha 15.10, I'm unable to launch Libre Office 5. First I used the libreoffice-5-0 ppa, today LO has been updated in main Willy repository on version 5.0.1 Each time I try to launch the program or click on a document, I get the error message on the opening window (please see the screenshot attached) - translation from French: "Fatal Error - Impossible to launch application - User setup (installation) could not be finished". Thanks in advance for your help ! To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/1495083/+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