As in the title, I jsut updated a Roo 1.1.2 project to Roo 1.2.1.
Now I cannot start the web app anymore: the error is
Code:
GRAVE: Error configuring application listener of class org.springframework.web.context.ContextLoaderListener
java.lang.ClassNotFoundException: org.springframework.web.context.ContextLoaderListener
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1701)
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1546)
	at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:525)
	at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:507)
	at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:124)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4715)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5273)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:897)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:873)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:615)
	at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:649)
	at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1581)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:662)
22-mag-2012 17.41.28 org.apache.catalina.core.StandardContext listenerStart
GRAVE: Skipped installing application listeners due to previous error(s)
22-mag-2012 17.41.28 org.apache.catalina.core.StandardContext startInternal
GRAVE: Error listenerStart
22-mag-2012 17.41.28 org.apache.catalina.core.StandardContext startInternal
GRAVE: Context [/webapp] startup failed due to previous errors
Any hint?

Many thanks,
Stefano