Are you using Apache OpenOffice? Have you recently tried to open a .odt, .ods or .odp file and received this error message? “This document was created by a newer version of OpenOffice. It may contain features not supported by your current version.”
In this case, the document probably wasn’t created in OpenOffice, but in LibreOffice, a successor project. LibreOffice 7.0 introduced support for OpenDocument Format (ODF) 1.3, which includes many new features and benefits.
LibreOffice and Apache OpenOffice share the same roots, and while Apache OpenOffice’s last major release (4.1) was back in 2014, LibreOffice has since been developed much further with extra features and updates.
LibreOffice is still free and open source software, of course, so to get the most out of newer documents, download LibreOffice and give it a try!