I've been playing with the new setup of Unity on Ubuntu Natty 11.04 beta, which now comes preloaded with the forked LibreOffice. This has caused some problems for installation of Zotero, so I want to here give the walkthrough instructions that I used in a LiveCD environment to get everything working.</p>

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1.) Add the Maverick partner repository:

Software Center -> Edit Menu -> Software Sources -> Other sources -> Add:

deb http://archive.canonical.com/ubuntu maverick partner

2.) Drop to a command prompt:

sudo apt-get update
sudo apt-get install sun-java6-jre sun-java6-plugin
sudo update-alternatives --config java

If the last option prompts you to set a specific java configuration, ensure you select the Sun variant.

3.) Install Zotero plugin from http://www.zotero.org/

4.) Install the outdated OpenOffice plugin, not the most recent one: http://www.zotero.org/download/integration/Zotero-OpenOffice-Plugin-3.1b1.xpi

5.) After Firefox has restarted go to Zotero -> Preferences -> Cite tab.

In here, change the OpenOffice parameters to the following:

UNO: file:///usr/lib/libreoffice/basis-link/ure-link/share/java/
soffice binary: file:///usr/lib/libreoffice/program/

6.) Click "install plugin".

If this fails, go into LibreOffice, Tools menu -> Extension manager -> Add

Navigate to your firefox profile directory which will look like:

/home/yourusername/.mozilla/firefox/ALONGSTRINGOFLETTERS/extensions/zoteroOpenOfficeIntegration@zotero.org/install/

and manually add the .oxt file from within.

With any luck, you should be set. Worth also checking in LibreOffice -> Edit menu -> Preferences -> Java that you are using the Sun interpreter in LibreOffice.