When openoffice closed automaticaly it's proposed a recuperation of files much old of the last version of written.
Do you use LibreOffice or Openoffice? I mean LibreOffice is a fork of Openoffice, it's been made several years ago. Also, could you try https://wiki.documentfoundation.org/QA/FirstSteps#Corrupted_user_profile ?
s/recuperation/recovery/g