Hi 
I did a quick bit of work and recovered this version of just the text.
Dissertação-VersãoRevisada-v2.odt
<http://nabble.documentfoundation.org/file/n4080337/Dissertação-VersãoRevisada-v2.odt>
it lacks images and charts but hopefully you can re-acquire them?
The original file was 11.2Mb which is fairly large for emailing and this
list doesn't accept attachments anyway. So it was good to see drop-box
being used. I have used Nabble to keep the file with the thread (and
because i don't know how to use drop-box). The copy is just 220kB (ish)
(about 1/10th the size).
I had tried the link and got the same response. My 2nd attempt was to
download the file and double-click on it. Same response again. If this had
been my own file i would go back to my most recent back-up. Perhaps there
is a version emailed to someone, perhaps one on a usb-stick, perhaps one on
yet another machine? I'd have a quick hunt around but not put too much
effort into it at this stage.
"Back-up" is often made into very complicated processes but really it's just
"another copy" of the file. So it's fairly easy to make sure you do
informal back-ups by just using copy&paste. You probably already have one
such back-up laying around somewhere.
How i fixed the "version2" was using Gnu&Linux. I can right-click on Odt
files to "Open With" and then choose "Archive Manager". I also created a
blank document and opened it the same way. Then i dragged the
"contents.xml" from the broken file into the new one.
On another OS, such as Windows or Mac, i might have had to make a copy of
the broken file and then changed the file-ending from ".odt" to ".zip" and
then double-clicked. Similarly with the new file.
Regards from
Tom 