Everything worked perfectly, but since I upgraded to T5.0.6, it fails for an understandable reason!
I replaced my html by tml and placed them in the right place. I upgrade log4j to get the latest and add the new logging api (to avoid runtime error). The thing is really strange... My Start.tml <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd"> <head> <title>Paper and Pen Online - Identification</title> </head> <body> <p style="color:red;"><b>${message}</b></p> <t:form tracker="login"> <t:errors/> <t:parameter name="password"> <t:label for="password"/> <t:passwordfield t:id="password" t:validate="required" value=" login.password"/> </t:parameter> </t:form> <p>Si vous n'avez pas encore de compte, <t:pagelink page="Register">crees-en un!!</t:pagelink></p> </body> </html> My Start.java public class Start { private static final String SUCCESS = "Home"; private static final String FAILURE = "Start"; @ApplicationState private Login login; public Login getLogin() { return login; } @Persist private String message; public String getMessage() { return message; } @ApplicationState private User user; @InjectPage private Home home; @Inject private UserService userService; @Inject private ApplicationService applicationService; String onSuccess() { message = null; try { user = userService.getAuthenticatedUser(login.getLogin(), login.getPassword()); if (user != null) { home.setUser(user); UserLite userLite = new UserLite(user.getLogin()); applicationService.makeOnline(userLite); home.setUsers(applicationService.getUserList().getUserList()); } else { message = "Login ou Password inconnue. L'identification a échoué."; return FAILURE; } } catch (PapoException pe) { message = "La procedure d'identification a rencontré un probleme !!"; return FAILURE; } return SUCCESS; } } And the error : Could not convert 'message' into a component parameter binding: java.lang.NoClassDefFoundError: papo/pages/Home location context:Start_fr.tml, line 8, column 363<html xmlns:t=" http://tapestry.apache.org/schema/tapestry_5_0_0.xsd">4<head>5<title>Paper and Pen Online - Identification</title>6</head>7<body>8<p style="color:red;"><b>${message}</b></p>9<t:form tracker="login">10<t:errors/> 11 <t:parameter name="password">12 <t:label for="password"/>13<t:passwordfield t:id="password" t:validate="required" value=" login.password"/>So, the tml is found, read, interpreted but for a reason I don't understand it refer to my class Home which is in the same package than my class Start. I have a Register page (tml + java) and it give me exactly the same error! No error at runtime, no compilation error (Inject are the new Inject, for example). Thanks -- Michael Bernagou Java Developper