title: NoClassDefFound Error but I can see the class in dependencies
body: <p>I'm facing a NoClassDefFoundError: org/springframework/transaction/event/TransactionalEventListenerFactory when I try to run my Spring/Maven project but I can see that the missing class (TransacationalEvenListenerFactory.class) is on one of the dependencies that I added with Maven. That dependency (spring-tx) can be seen in the Maven Dependencies part inside my Eclipse
  <a href="http://i.stack.imgur.com/cUGkx.png" rel="nofollow">enter image description here</a></p>
  
  <p>I know it may be a silly problem but I'm not getting it</p>