Running v3 and v4 Together
Overview
FarCry 4.0 release changes the overall directory structure of where files are stored in the framework. As this differs from earlier releases of FarCry its possible to run v4.x with an earlier version of FarCry.
How To
Essentially follow the default installation instructions for both FarCry v3 and FarCry v4. The installation directories should not conflict between the individual versions.