Bean named 'txAdvice' must be of type [org.aopalliance.aop.Advice]

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userService' defined in URL [file:/D:/WorkSpace/apache-tomcat-6.0.33/webapps/SingleUsers/WEB-INF/classes/applicationContext.xml]: Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'txAdvice' must be of type [org.aopalliance.aop.Advice], but was actually of type [org.springframework.transaction.interceptor.TransactionInterceptor] org.springframework.beans.factory.BeanCreationE