org.springframework.beans.factory.BeanCreationException: Error creating bean with name ’tilesConfigurer’ defined in ServletContext resource [/WEB-INF/spring/appServlet/servlet-context.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.web.servlet.view.tiles2.TilesConfigurer]: Constructor threw exception;

http://richardbarabe.wordpress.com/2009/02/23/apache-tiles-2-integration-with-spring-mvc/

Update:

add this dependencies to solve :
[xml]
<dependency>
<groupId>org.apache.tiles</groupId>
<artifactId>tiles-el</artifactId>
<version>2.2.2</version>
</dependency>
<dependency>
<groupId>org.apache.tiles</groupId>
<artifactId>tiles-template</artifactId>
<version>2.2.2</version>
</dependency>
[/xml]