We state: =============
When using cayenne-server-x.x.jar you'll need a few third party jars (all included in lib/third-party directory of the distribution): Apache Velocity Template Engine, version 1.6.x (and all its dependencies bundled with velocity-dep) Apache Commons Collections, version 3.2.1 Apache Commons Logging, version 1.1 ============= http://cayenne.apache.org/docs/3.1/cayenne-guide/including-cayenne-in-project.html#jar-files-and-depdendencies However, we are missing commons-lang-2.6