hi. I want migrate from Tapestry 5.0.18 to 5.1.0.5, but if i run my project (Tapestry 5.0.18 with support Spring 2.5.6) i see this exception: ---- Caused by: java.lang.RuntimeException: Error invoking service contribution method org.apache.tapestry5.spring.SpringModu le.contributeApplicationInitializer(OrderedConfiguration, ApplicationContext): No service implements the interface org.s pringframework.context.ApplicationContext. ---- And I don't know, what service I must implement. You can help me?