Sorry, I've download Tapestry 4.1 and folowing jars, all in <Tomcat>\shared\lib
aspectj-1.5.2.jar easymock.jar jakarta-oro-2.0.8.jar ognl-2.6.9.jar testng-4.7-jdk15.jar commons-io-1.2.jar hivemind-1.1.1.jar hivemind-lib-1.1.1.jar I was using Tapestry 3.03 and all of your library dependencies, then I delete T303 jars and add T41 jars. After I try to create a simple page with *DropdownDatePicker component <html> <head> </head> <body jwcid="@Body"> <form jwcid="@Form" listener="ognl:listeners.formSubmit"> Data: <span jwcid="@DropdownDateTimePicker" value="ognl:startDate"/> </form> </body> </html> import java.util.Date; import org.apache.tapestry.html.BasePage; /* * Created on 04/08/2006 * * TODO To change the template for this generated file go to * Window - Preferences - Java - Code Generation - Code and Comments */ public class Home extends BasePage{ private Date startDate = new java.util.Date(); public Date getStartDate() { return startDate; } public void setStartDate(Date startDate) { this.startDate = startDate; } public void formSubmit(){ return; } } And what i got is an empty page on Firefox and IE What did I wrong? :( Thank's for your time. Marcus *