O que pode ser esse erro??
[quote]java.lang.IllegalArgumentException: Resources cannot be null.
org.apache.commons.validator.Validator.(Validator.java:161)
org.apache.struts.validator.Resources.initValidator(Resources.java:495)
org.apache.struts.validator.ValidatorForm.validate(ValidatorForm.java:108)
org.apache.struts.chain.commands.servlet.ValidateActionForm.validate(ValidateActionForm.java:53)
org.apache.struts.chain.commands.AbstractValidateActionForm.execute(AbstractValidateActionForm.java:100)
org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:48)
org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:280)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1858)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:446)
javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)