Hi Harish,
as i see this error happens because some classes are already part of one other imported archive in the same namespace.
Please check once more what libraries and versions you are using. You might have the problem what is described here:
--> "The dependency on commons collections (which has become problematic now that there are two incompatible series of commons collections releases) has been factored into a separate optional sub-component plus a small number of stable and mature org.apache.commons.collections packaged classes (which are distributed with the BeanUtils core). This arrangement means that the BeanUtils core sub-component (which is the primary dependency for most downsteam applications) can now be safely included on the same classpath as commons collections 2.x, 3.x or indeed neither. "
I think you will need to get the correct versions which can co-exists together.
Best Regards,
Viktor