Camel Route throws a NoClassDefFoundError and camel context suddenly disappears

Issue

Camel Route throws a NoClassDefFoundError and camel context suddenly disappears.

2013-04-03 15:34:20,093 | WARN | tenerContainer-1 | DefaultMessageListenerContainer | 84 - org.springframework.jms - 2.5.6.SEC01 | Execution of JMS message listener failed
java.lang.NoClassDefFoundError: Lorg/apache/activemq/broker/region/Destination;
    at java.lang.Class.getDeclaredFields0(Native Method)[:1.6.0_29]
    at java.lang.Class.privateGetDeclaredFields(Class.java:2291)[:1.6.0_29]
    at java.lang.Class.getDeclaredFields(Class.java:1743)[:1.6.0_29]
    at org.apache.activemq.util.IntrospectionSupport.addFields(IntrospectionSupport.java:307)
    at org.apache.activemq.util.IntrospectionSupport.addFields(IntrospectionSupport.java:304)
    at org.apache.activemq.util.IntrospectionSupport.addFields(IntrospectionSupport.java:304)
    at org.apache.activemq.util.IntrospectionSupport.toString(IntrospectionSupport.java:251)
    at org.apache.activemq.command.BaseCommand.toString(BaseCommand.java:69)
    at org.apache.activemq.command.Message.toString(Message.java:729)
    at org.apache.activemq.command.ActiveMQTextMessage.toString(ActiveMQTextMessage.java:160)
    at java.lang.String.valueOf(String.java:2826)[:1.6.0_29]