I had the same problem with writer. I tried all the suggestions above and none worked.
I did some digging around and in '~/.openoffice.org/3/user' found the file 'registrymodifications.xcu'. Looking inside it, it seemed to contains the name of the document I was editing etc. So I renamed it to 'registrymodifications.xcu.old' and restarted writer. Now I can enable and disable the display of invisible characters. I hope someone finds this useful! -- 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/857041 Title: [Upstream] Nonprinting characters not showing in Writer Status in LibreOffice Productivity Suite: Fix Released Status in “libreoffice” package in Ubuntu: Fix Released Bug description: When authoring, or viewing write-enabled document in Writer (LibreOffice 3.4.3 OOO340m1 (Build:302) ) the non-printing character symbols don't show on screen. Ctrl-F10 toggles toolbar icon OK, but to no effect on screen. I'm running Ubuntu AMD64 Oneiric (beta) with Nvidia proprietary driver active. To manage notifications about this bug go to: https://bugs.launchpad.net/df-libreoffice/+bug/857041/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

