Just tried to save a Microsoft Excel  document which was password protected  in  ODS format. And got the above error.

Was running LibreOffice 4.0.0.3 and the Help ==> Check for Updates showed that a newer version was available

So I downloaded and installed versions "LibreOffice_4.0.1_Linux_x86-64_rpm.tar.gz" and "LibreOffice_4.0.1_Linux_x86-64_rpm_helppack_en-US.tar.gz" 

tar -zxvf LibreOffice_4.0.1_Linux_x86-64_rpm.tar.gz 
tar -zxvf LibreOffice_4.0.1_Linux_x86-64_rpm_helppack_en-US.tar.gz 
cd LibreOffice_4.0.1.2_Linux_x86-64_rpm
cd RPMS/
su -c 'yum localinstall *.rpm'
cd ../..
cd LibreOffice_4.0.1.2_Linux_x86-64_rpm_helppack_en-US/
cd RPMS/
su -c 'yum localinstall *.rpm'

The spreadsheet then successfully saved in ODS format.