Premiere Pro Downgrader
Does this look familiar? If so, you may want to try PPDG, a free Premiere Pro project downgrader for macOS 10.8 and later. If you edit with this software, you’ll know its project files have no backward compatibility. This utility avoids that by simply changing a value in the .prproj file’s xml code, so that Premiere will attempt to load the project, rather than giving you the error message below. If you are a Premiere Pro editor and use a Mac, take a look.