Check the md5sum of the installer downloaded, it may be corrupted. See here : http://download.openoffice.org/2.3.1/md5sums.html
, there is a link to the instructions on top of that page.
Thanks to add '[Solved]' in your first post
button) if your issue has been fixed.
AOO 4.1.2 on Xubuntu 15.10 (Wily Werewolf) and PortableApps port 4.1.2 on Windows 7