hey all,
i really dun know what the hell this means, the application was running fine on my laptop, and when i try to run it on the pc this mad error shows up....the enviroment is the same with the same Jre,Jdk and the same jetty 6.1.5, the error is:

2008-04-10 10:20:18.881::WARN: Nested in org.springframework.beans.factory.BeanCreationExce ption: Error creating bean with name 'myTransactionManager' defined in ServletContext resource [/WEB-INF/applicationContext-hibernate.xml]: Cannot resolve reference to bean 'hibernateSession' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationExce ption: Error creating bean with name 'hibernateSession' defined in ServletContext resource [/WEB-INF/applicationContext-hibernate.xml]: Invocation of init method failed; nested exception is java.lang.UnsupportedClassVersionError: Bad version number in .class file:
java.lang.UnsupportedClassVersionError: Bad version number in .class file

i tried using different versions of hibernate and spring but it is still the same....please help me cuz im going mad soon
thanks