It's mandatory to have JSF implementation's jars (commons-beanutils.jar, commons-digester.jar, commons-collection.jar, commons-logging.jar jsf-api.jar and jsf-impl.jar), near by ecruiser-suite-v.1.1.5.jar (or any other version), log4j.jar and jstl.jar.
The application server's log file gives you details about the missing .jars, so you could look into the stack trace from there.