Paul Tuersley posts pt_OpenSesame which is a script for After Effects that allows you to export projects to any version of After Effects like the universe intended. Check out the OpenSesame script for exporting After Effects projects to any version of After Effects here.
OpenSesame brings backwards compatibility to After Effects, exporting projects that can be opened in any version from CS3 or later. Projects are exported as human readable text files that can also be edited in a text editor or spreadsheet in various ways, such as changing text layers, colors, footage and file paths.