What build system are you using in your project? maven, gradle, ant, ide-specific?
What I've pasted are the Maven artifacts you should use. If you are not using Maven, you can get the jars from here: http://sourceforge.net/projects/jbpm/files/jBPM%205/jbpm-5.4.0.Final/jbpm-5.4.0.Final-bin.zip/download
Best Regards,