Dear all, thank you for the multitude of replies.
I am writing an article for a conference. Usually I do this with Latex, but
for this particular conference they requiest a file in docx or doc format.
The docx file is totally unusable by LibreOffice, it can open it but not
save any changes, this despite the file looking rather simple. Luckily
LibreOffice deals quite well with the doc format, so I'll manage to write
and submit the article. Still I'd like to report the error to promote the
perfecting of Libre Office.
In the good old days of C programing at the Faculty, core files where never
of much help, so I'm not that inclined to go that route. I'll just try to
follow the guides provided by Tom.
The sugestions to buy M$ Office or download a "free" version for Ubuntu
where quite hilarious and entertaining. Let's just hope some less savy user
don't follow them inadverdly, for the first is stupid and the second stupid
and illegal.
Thanks to everyone that took the issue seriously, but also to the comedians,
free laughing is always welcome.