https://bugs.freedesktop.org/show_bug.cgi?id=47482

--- Comment #3 from [email protected] 2012-03-25 08:13:53 PDT ---
Just reporting additional finding that may or may not be relevant to this
issue:

Besides the problem regarding the legacy Openoffice 1.0 formats, backward
compatibility is broken for files saved with a password from LO 3.4.5, LO 3.4.6
and 3.5.1 in current ODF format (e.g. *.ods files for example), which can be
open fine (with the password) in the newest releases of LO (3.4.5, 3.4.6 and
3.5.1) but NOT in earlier versions of LO 3.4.x, LO 3.3.x or Openoffice (tested
3.3.0). The following error message appears in a pop-up dialog:

Read-Error.
Format error discovered in the file in sub-document content.xml at
1.0(row,col).
OK

So something important has changed from LO 3.4.5 on in the way the ODF and OO
files are saved encrypted with a password, which result in (1) loss of backward
compatibility of the saved encrypted files with earlier versions of LO; (2)
loss of data if one inadvertently saves current work ONLY in the OO 1.0 format
with a password (after closing the file data are lost forever because saved
file cannot be open either with the newer 3.4.5 and later LO versions or older
versions of LO or OO.org).

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